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The SG-1 team ran out of helmets that fit them
In early episodes they have helmets but later on budget cuts mean that they can't afford helmets for everybody. So the old helmets got used up and the remaining can't fit SG-1.

Daniel can't even come close to pronouncing "Mjöllnir" correctly.
That's why he refers to it as "Thor's hammer" as if that were its actual name, figuring it's better than being called out on using inconsistently-botched pronunciations. Or calling it "Myeh-myeh".
  • Alternatively, he confuses it with Jolinar, the Tok’Ra who briefly inhabited Carter’s body.

Naquadah is an element in the island of stability.
It's a superheavy element with a very long half-life, but it is extremely unstable to explosions — the slightest explosion will make it go supercritical and cause a nuclear explosion. These are properties we would anticipate for elements in the island of stability (which has not, as of yet, been observed).
  • Then the Naquadah that stargates are made of must be very resilient/refined, considering how often very explosive firefights are fought near a chappa'ai. Otherwise, every stargate could be a potential ground-zero for an Earth-Shattering Kaboom.
    • You're confusing Naquadah for Naquadria. Naquadria is the unstable element, with a long half-life and explosive tendencies. meanwhile Naquadah is stable and superconductive (which means that it creates no electrical resistance) and will only explodes if you overload it with energy, which is difficult to do.
  • Naquadah is probably like bismuth-209, except with a much higher atomic number in a theorized but still speculative island of stability. Bismuth-209 decays so slowly that it can be dealt with as if it were stable and non-radioactive. But it actually is radioactive, with a half life 10 billion times the age of the universe. It is safe to ingest though (see: pepto-bismol). Naquadria is very unstable (it is stated that it will decay back into ordinary naquadah after a relatively short time (less than 10,000 years - meaning its half life is probably something like 2500-5000 years). Naquadria is probably naquadah with an extra neutron (or two) and probably decays via neutron decay.
  • Naquadah is known as element zero or “eezo” in an alternate reality.

After Season 2, the Stargate program became financially self-sufficient.
Think about it. We've seen that Goa'uld LOVE the Gold motif (even their name has gold in it!!) Ego, after taking down some of their facilities, teams were sent in to strip the goldoff of anything not needed for research. It was then sold privately by the US to further fund the stargate program. Note after the beginning of season 2, financing was never brought up again...
  • At least not until season 9.

The ship encountered in "Grace" belongs to the guys from "Foothold", a.k.a. the Stragoth.
  • To paraphrase Rodney: otherwise they've discovered yet another technologically advanced species capable of posing a threat to earth. It would also explain why they fire on the Prometheus right away.
  • The Stragoth by the way are named as such in the SG-1 roleplaying game.
    • Well, they certainly have the same color scheme.

Tealc lost his staff and had to grow his hair after he lost a bet.
He did have experience playing poker.

Stargate personnel use armor-piercing bullets.
When Apophis attacks Cheyenne Mountain in "Children of the Gods", Jaffa armor proves mostly bulletproof, with only one killed by a lucky shot. But later in the episode, and in all subsequent episodes, Tau'ri bullets do quite well. What happened was that they used Cheyenne Mountain's supply of armor-piercing bullets for the mission to Chulak, and all subsequent requisition orders have included plenty of armor-piercing bullets.
  • Confirmed in "The Tomb" — O'Neill mentions that the P-90s are loaded with armor-piercing bullets.
    • The standard round is armor-piercing. Part of the design objective for the P90 was countering the increasing use of body armour by modern armies.
  • The SGC is probably the largest consumer of armor-piercing bullets in the world by now.

Some of the things Teal'c and O'Neill did when stuck in the loop in "Window of Opportunity"
  • Set the auto-destruct to go off;
  • Take out Teal'c's symbiote;
  • Teal'c went into a dangerous, deadly Kel'no'reem to talk to his symbiote;
  • Tell everybody else to take the loop off, too;
  • Watch every single episode of The Simpsons that had aired by that point;
  • Finally get Jack to watch Star Wars.
  • Fulfill every Tealc/Jack, Tealc/[character] and Jack/[character] slash and fan fic.

Just like the gate wouldn't dial outside addresses, no one could die/be murdered in "Window of Opportunity"

The alliance of four great races were of races that inspired one another
Yet another alternative to the above theory. The cycle starts with the furlings, who are an ancient and powerful race. When they felt their end coming and retreated far away (possibly integrating with background radiation from the big bang, just to integrate SGU) they passed on their knowledge to the race they saw most worthy, the Nox. The Nox, inspired by the furling ideas, develop even further, integrating various ideas into their society. But when the Nox felt that they had grown stagnant and complacent, they gave their legacy to a race that had recently fled to their galaxy; the Ancients. What happened to the ancients is pretty well known to all by now, and they passed their knowledge down to a race that had just created their first hyperdrive, yet were already capable of reaching another galaxy; the asgard. The asgard, inspired by their predeccesors, protected the children of the ancients, the tau'ri, and built the Heliopolis complex so that none of the four great races would be lost to history. And when their history was over, they passed on all their knowledge once again.
  • Furlings being the aliens Destiny is looking for would be a Crowning Chekhov's Gun of Funny.

In "It's Good to be King", Garan (the woman who supports Maybourne by listing all the good things he's done) is actually the Ancient who built the Prophecy Wall.
Well, the Ancient had to be there somewhere, right?
  • No, because the Ancient who built it was Janus, who created the time-traveling Puddle Jumper and was the only Ancient who ever used it.
    • You misunderstand: Garan was really Janus in disguise.

They use the Goa'uld hand healing device off screen to heal away all their injuries
Let's face it their medical insurance would probably bankrupt the programme anyways and they do manage to heal away some injuries which should leave some scarring. Aside form Col O'Neill's scar on his eyebrow probably because he wanted to out-do Quatrich.

The Stargate Program is the worst-kept secret in the armed forces.
Maybe they're keeping the information quiet from civilians, but there is no way they can be keeping something of this magnitude quiet anymore. Everyone has undoubtedly heard the rumors.
  • Over the decade-plus or so that the program has been in existence, thousands, if not tens of thousands, of personnel have to have been assigned either directly or in support, and all of them have civilian relatives and friends; several of them had to have talked, even if they swore their loved ones/friends to silence. There's simply no way that something this big can be kept secret indefinitely with so many people that have to be involved, especially now that the world's other major powers are involved in helping to oversee the program, have sent personnel of their own to liaise with the SGC, etc. It's really only a matter of time before the civilian population at large learns what's been happening.
  • The sheer number of supplies being shipped offworld and never heard from again - enough ammunition to equip an army with not obvious wars going on, medicines used to help off-world villages, you name it. The manufacturers must surely be curious where they're going when they keep being ordered.
  • While in reality it's not unheard of for a member of the armed forces to die and have no body to be shipped back (or very little), this is happening often with not enough wars on earth to account for them.

The sticking point on the revelation of the Stargate Program isn't technology or science, it's religion.
All the upper echelons of every major established world religion have already been briefed. They're just still bickering a bit on how to explain things to the faithful.
  • Kinsey at least paints his obsessive objection to the Stargate program in religious terms.
  • To add some confusion to this WMG, the Vatican has already accepted the possibility of aliens.

Samantha Carter is King Arthur
According to Daniel, Arthur was most likely a mortal who ascended with the help of Merlin. However, there is the prophecy that Arthur would return and aid Britain in its hour of greatest need. What happened was that Arthur saw the threat posed by the Goa'uld, and descended. But instead of doing what Daniel did (show up as a naked amnesiac), Arthur carefully crafted his new human form, choosing his "parents" carefully to ensure that when he grew up, he would be in a position to help Earth (including Britain). By the time he descended, the Stargate was already in US hands, which is why he was reborn as an American. He chose Jack Carter as his father — a prominent military officer of solid character, who would influence his child to join the military. And he correctly divined that the best way he could help Earth would be with his mind. He cheated a little here — Carter's incredible intellect is actually beyond normal human capability. As for why he chose to be reborn as female? No clue. But time and time again, Samantha Carter's skill, bravery, and intellect has saved the Earth. Including Britain.
  • This is perfect.
    • FWIW, Amanda Tapping is English by birth, so this would become a weird subversion of Fake Nationality...

Wormhole X-Treme! is a parody In-Universe
Or was forced to be one by its budget problems. From what we've seen, the acting is hammier than a lot of Star Trek, the special effects are about as bad as '60s sci-fi, and the technobabble from the Carter expy is cringe-worthy. It just strikes me as parodical through and through.
  • The SGC deliberately let Wormhole Xtreme be produced to provide plausible deniability, and having the show be cheesy *helped*. Anytime there was a leak, they could say "this isn't real, they just copied it from this cheesy sci-fi show, silly conspiracy theorists".

Teal'c grew that goatee/soul patch thing in Small Victories PT. 2 (also known to some fans as a chin caterpillar) because he thought they'd be stuck on that planet for awhile
He kept it when they got home because he knew it bothered O'Neill. No one knows how he make it blondish though.

Super soldier armor is a hot commodity on the galactic black market.
Let's see, cool looking black armor that stops basically everything and comes with wrist-mounted energy-weapons? *** yeah. SG-1 ended the production of Kull, but that still leaves a bunch (but probably under a thousand) of them running around the galaxy, to either die of heart attacks or be killed by SG teams. Anyone who comes across a dead one and manages to strip the armor off can sell it for his weight in naquadriah.

The Salish spirits are or were allies of the nox
The spirits and the nox have not only a rather similar philosophy of co-existing with nature and having no real concern for the rest of the universe (though the spirits are a tad more militant about it), but they also display a lot of similar powers. Making people disappear, teleportation, healing people with a wave of the hand and even activating stargates remotely. They seem to be a lot less effective with their powers than the nox were (making people disappear takes effort and has a visible effect, they require six people for a simple healing rather than three for a full resurrection, and the stargate still needs to dial when activated remotely), but they're similar enough that a connection between the groups is a distinct possibility. The two groups being connected would also explain why the nox and the spirits didn't bury their stargates long before they met SG-1, being useful for speaking to one another.

The alliance of four great races only ended in the last 2000 years
Mostly based on the history of the four races, and how it related to earth:
  • After the Lanteans returned from Atlantis to Earth, they slowly integrated into the population. However, there's a few bits that point to actual ancients being around for a surprisingly long time, most notably their influence on roman language and culture, and to inspire the myth of Atlantis. This would mean they were around until about the year 300 BC, probably even longer.
  • The Asgard had their own influence on norse culture. It's tough to identify when exactly their influence began, but it's likely before 400 AD (when the first runestones were written).
  • Nox aren't explicitly related to any specific earth culture, but seem like they might have influenced human believes of fey or fairies (let's face it, in stargate, every alien is either inspired or imitated an earth mythology, and the nox certainly don't seem like they would still be imitating earth legends), of which the principles date back to celtic, germanic and greco-roman legends.
  • Obviously, the furlings are a little tougher to place. However, we are given some hints, albeit of questionable canonicity. In one of the novels (city of the gods), an omecoyan (GIANT ALIENS) temple of earth is found to contain furling writing, with the implication that they either are furlings, or that they are an automated system created by the furlings. 'Crystal Skull' indicates that the omecoyans were the inspiration for at least the mesoamerican pyramids, placing their presence on earth at around a 1000 BC. The cancelled Stargate MMO 'Stargate Worlds' would have contained enemies called the Straegis, which were the last furlings, enslaved by Ra.
That means that all four races of the great alliance were active on a single planet in a relatively short timeframe (well, by the standards of this show), which makes it pretty unlikely that they weren't still in their alliance. With the information given by the plans for Stargate worlds, it is likely that this was also near the end of the alliance.
The entire series is a series of daydreams of Jay Felger.
  • The ending of "The Other Guys" and "Avenger 2.0" shows Felger awakening from a daydream after going on missions with SG-1. Neither of these episodes show any of the main cast when he's definitely "awake". It's possible that he has a boring research job which he can't advance from because of his bumbling tendencies and just imagined the entire series as an escape from reality.
The Nox were wiped out by the Replicators off-screen
The Nox weren't seen after the show's third season so of course by definition were never seen after the Replicator invasion of the Milky Way (Season 8). When the Replicators invaded the galaxy during "Reckoning", naturally they concentrated on the Goa'uld but they also sought out the most advanced technology they could find. If they detected the Nox, they would have attacked them. While the Nox could hide their cities, the Asgard also had cloaking technology and yet they didn't employ it to try to hide their technology/people from the Replicators. I'd speculate that the reason for this is that the Replicators can scan through even advanced cloaking devices (such as Asgard cloaking devices). It's possible the Nox are more advanced than the Asgard (though less advanced than the Ancients) but likely that if the Asgards' cloaks weren't effective, neither were the Nox'. If the Replicators did find the Nox, there's no evidence that the Nox would have been any more capable of dealing with them than the Asgard were (in fact they would be a lot less prepared, having no mind for military strategy, no weaponry, a reluctance to destroy and since the Replicators would have learnt a lot from fighting the Asgard). The Nox would have been destroyed with the Replicators (hopefully) being destroyed soon after doing so (keeping in mind that they unburied their gate because of the Tollan and could have reburied it since, in which case the anti-Replicator beam would never have propagated through their gate).
There was a gap of a few days in the middle of "New Order, Part 2"
During the episode "200" a reference was made to a previously unseen event where O'Neill had been invisible. Teal'c had hair. Yet they spoke about Hammond's office. Teal'c didn't get hair until the start of Season 8. Hammond lost command at the end of Season 7. There's no overlap. That said, Weir was only supposed to be there temporarily and Hammond wasn't officially given a new position until "New Order, Part 2" in Season 8. Out of loyalty to Hammond (and given he wasn't seen in the O'Neill invisible sequence) I think it's possible that they could have kept referring to the office as Hammond's office, even while Weir was in charge and that that's when that scene took place. The problem still remains that Jack was frozen, then on the whole adventure with the Asgard, then he found out about the promotion. There's no obvious place for that scene to go.

However, it's possible that between the scene on Orilla and the scene in Weir's office where Jack found out about the promotion, a few days had passed. Weir mentioned that he'd been given a clean bill of health "as far as the finest medical professionals on this planet are concerned" suggesting he'd at least had time for a thorough check-up. Why exactly he would have ended up on a mother ship during this time and gotten exposed to a cloaking generator, being turned invisible, then not even mentioning it isn't clear. However, this is the SGC, and weird stuff happens all the time so it might not have seemed that important. The whole cloaking generator thing may have ended up being a red herring any way, with the real reason actually being related to the ancient repository. In the same way he got healing abilities, invisibility may have just been an ability he got as side effect and his invisibility may have actually be a sign of him not being completely "cured" of the knowledge yet (with the other symptoms at a risk of returning as well). Once he got cured for real, then the scene in Weir's office took place.

Of course, there's also the possibility that the whole O'Neill invisibility thing was just something Carter made up (when her other ideas kept getting shot down) and the others played along.

Harry Maybourne actually is a Godzilla fan.
No real reason other than it would be funny.

    How the Stargate system works 
The point of origin symbol is the equivalent of the Enter key.
Since the POO symbol is always the last one in a sequence, and since it stays the same for every address dialed, its only meaning can be to signal that the address is complete — thus allowing the dialing program to distinguish between situations where seven, eight, or all nine chevrons are used.

Explaining why it's different for every Stargate is trickier. In Stargate, the Earth and Abydos Stargates had completely different symbol sets — an aspect that SG-1 quietly retconned away. Since all Stargates are now identical except for the POO symbol, the idea is probably to tell Stargates apart even if they are moved between planets.

  • Alternatively, the POO symbol could have been used as a shorthand by the ancients for talking about their destination.
    Ancient 1: So, where are you going this year?
    Ancient 2: I was thinking of going to Circle over Pyramid.
    Ancient 1: Nice.
    • Actually, they would've probably referred to the planets by their seven-to-nine-syllable Ancient name as derived from the planet's gate address. ("Lost City, Part 2")
      • The syllable for the Earth's POO in Ancient is "At".
    • Since "Lost City" showed that the symbols are assigned corresponding syllables, this alternative is probably confirmed. Earth is 'At', by the way. Whole addresses form phrases that are used as planet names ('Prok-la-rush Tay-o-nas' for the only in-universe example), but these may be more "formal" or official names than that represented by the POO.
      • Couldn't it just as likely be a serial number, the ancients equivalent of going to planet 831547?
  • In the Pegasus galaxy, the POO and enter keys seem to be the same, suggesting that the use of two separate keys for POO and enter became obsolete some time between the creation of the stargate system in the Milky Way and that in Pegasus. Perhaps related to the obsolescence of manual dial?
  • Would make sense as far as dialing out of the galaxy goes. If you didn't have an 'enter' command, you'd connect as soon as you had seven, wouldn't you?
  • (This idea was copied from the SGU WMG) Alternatively, the origin symbol is actually an "orientation" symbol, added to keep version 1.0 gates (such as those used by Destiny) upright when they connect. Since they spin their entire ring, they would have to have some mechanism keeping the cargo from coming through upside-down. The answer is the final symbol, which isn't actually part of the address, but sets the gate's orientation to a known value. Version 2.0 gates (such as those used in the Milky Way) didn't really need it, but by that point, people were so used to dialing an orientation symbol every time that the designers kept it around.
  • It would actually make a lot more sense if the Point of Origin is actually the starting point of the dialing process. It doesn't mean a "point of origin" in the sense of where you start your travel, but rather, it's the start and end point of the dialing process. The gate only dials when it has been returned to its Point of Origin. As such, the symbol used is entirely up to the creator of that specific stargate. The Milky Way stargates were one of the earlier versions, and were made to order - as such, each one had a symbol, possibly indicating who created that stargate. The newer Pegasus stargates were mass-created for quicker distribution to replace the older units, while the ones being placed by the ships that went before Destiny had to be standardised and produced automatically. So really, the unique symbol used on some Milky Way stargates might be considered to be a maker's mark.

DHDs were invented between the colonization of the Milky Way galaxy and the colonization of the Pegasus galaxy. Before, only manual dial was used.
This is based solely on the fact that Pegasus Stargates don't have moving parts, not allowing manual dial at all, unlike Milky Way Stargates. Presumably, once the Ancients invented DHDs and installed them everywhere in the Milky Way, they declared manual dial obsolete; its possibility was only retained for already existing Stargates.
  • Alternatively, DHDs have existed as long as Stargates; what happened between the colonization of the Milky Way and Pegasus was that some mechanical problem with DHDs was solved, rendering manual dial unnecessary as an emergency backup procedure.
  • Note how often we encountered "broken" DHDs in SG-1 compared to Atlantis.

The Milky Way, Othalla, and Ori home galaxies' Stargates have three junk symbols.
Consider: Both the 'newer'/more advanced Pegasus Galaxy Stargates have 36 glyph spaces. The new "proto-Stargate" seen on the Gateship Destiny and in some episode previews on distant planets also have 36 glyphs. The Milky Way, Othalla, and Ori/Ancient/Alteran home galaxies' Stargates each have 39 glyphs. Therefore, three of those 38 glyphs + one point of origin glyph are 'useless' glyphs which are either never used, or specific eighth-chevron/ninth-chevron glyphs. Or possibly maintenance/"dry-dial" glyphs.
  • Alternatively, since we know at least as far as The Milky Way goes, the stargates are older. At that point in time the ancients thought there would be far more Gates and those extra symbols would be needed, (IE, I Pv 6 versus I Pv 4). At some point when the new gates were rolled out, the Ancients realized they'd never possibly need that many gates and cut down on the symbols.

The SGC uses the dialing computer instead of a DHD intentionally.
They could get a DHD if they really wanted one. The dialing computer is far more secure.
  • They can lock out dangerous addresses (black holes, for instance) so nobody can dial them, intentionally or otherwise.
  • They can employ user IDs, passwords (changed at need), palmprints and so forth to prevent unauthorized access even if someone gets to sub-level 26 undetected.
  • It can ignore a lot of nitpicky dialing protocols (admittedly, not always a feature, sometimes a bug).
  • It's only real drawback is that it's slower than a DHD, as they've learned to their cost on more than one occasion.
    • I'm pretty sure this one is confirmed in the show — they say that they keep the dialing computer for security reasons. Also, in "Avenger 2.0", Earth's gate wasn't affected, as Earth's gate no longer receives updates from the network.

Stargate addresses map to real coordinates differently from Daniel's explanation in Stargate.
First, having three lines intersecting in 3D space is redundant: if a set of fixed points is enough to cover all addresses, then addresses only need to have four components, not six, to get two intersecting lines.

Second, Daniel's model would imply that addresses allow a number of permutations: for example, 2-1-3-4-6-5, 4-3-2-1-5-6, or even backwards, as the three intersecting lines would stay the same. However, in Stargate SG-1, it's implied that addresses are unique and strictly order-dependent.

Third, constellations are not fixed points in space: they're areas of the imaginary sky sphere created by projecting stars of varying distance from Earth onto a single sphere.

Fourth, there are addresses differing in only one symbol. In Daniel's model, it would result (at best) in two intersecting lines and one line not passing through their intersection point.

What do the addresses mean, then? Well, in 3D space, you need at least three coordinates, although the coordinate system itself can vary (Cartesian, cylindrical, spherical, etc.) It's possible that the "constellations" do not correspond to real constellations (as Daniel assumed) and instead only serve as digits in base 38, and the mapping between "constellations" and digits was arbitrarily chosen. They translate into some coordinate system, and each of the three coordinates uses two "constellation" digits (and thus each coordinate has 1444 possible values — presumably, in some coordinate system, this gives sufficient resolution to address the entire galaxy).

  • The problem is, if 4 of 6 points in Daniel's system don't lie on the same plane, the system doesn't work. If you addressed 38 points in a spiral galaxy (39 gate glyphs minus point of origin), you could use a 6 symbol coordinate system thusly: 1. first reference point, say a pulsar 2. azimuth spinward from that point with zero azimuth being toward the center of the galaxy 3. elevation on a plane perpendicular to the azimuth. 4, 5 and 6 would be the same for another reference point. That would give you two lines in 3D space, and where they cross is the destination. The Po O glyph is used as a procedural symbol to finish the address.

What about the SGC address correction program, then? Well, presumably, Samantha came up with her own (correct) explanation of the addresses, independently, and probably never learned about Daniel's erroneous guess because she wasn't present when he explained it.

  • In one episode, Sam explains that once in a while, each Stargate autodials each other one to update their coordinates. This evidence supports the above theory.
  • This theory also explains why dialing the Asgard galaxy requires eight symbols rather than the usual seven.
    • They live in a different area code?
      • That is literally the in-universe explanation.
  • The address correction program, we may assume, is necessary only because the SGC does not use a proper DHD and therefore does not receive updates.
  • To the third point, the Abydos Stargate in the movie has unique symbols which would correlate to its own constellations. It can be guessed that the symbols only correlate to a general area, and that the Stargates never get close enough together to overlap.
    • In the movie, Abydos was in a different galaxy "at the other side of the known universe". SG-1 retconned quite a few things; all the other Milky Way Stargates have the same glyph sets, so it's logical to assume that so does the Abydos Stargate.
      • Possible fridge brilliance, since the series keeps the idea that different galactic gate networks use different glyphs? The only thing that changed is the location of Abydos from the "Tolium galaxy" into the milky way, and thus it's gate became a milky way gate.
  • The Abydos DHD may be damaged (it does not appear that Ra kept it in regular use in the movie, perhaps having one on his ship instead), explaining its unusual symbols and its only being able to dial Earth. (The on-screen explanation implies that address correction had to be done manually and that they could only dial Earth because only Earth's address was still current; but this does not mesh with much of anything else we know about the working of the Stargate).
    • Apophis uses the Abydos DHD to dial Chulak. It is an outrageous plot device: he had the hand-dialer, which he previously used to dial the SGC's Stargate, and the only purpose was to allow Ferretti to learn Chulak's address by looking at the highlighted keys. What ever happened to the glyph order being significant? As for the movie, no DHDs were shown in it; for all we know, they may not even exist in the movie-only continuity.
    • Even if the glyph order is significant, the SGC's dialing computer is more than capable of spam-dialing all 720 possible combinations of the glyphs until it found one that works. t SGC already knew which six symbols they needed, but didn't know the order for them (Ferretti saw the proper symbols glowing on the hand-dialer, but didn't see them actually entered). Six symbols chosen 6 at a time give 720 permutation.
  • Here is a screenshot of an Ancient's notebook from Ark of Truth. As you can see, there's a drawing like the one Daniel used in the movie to describe the coordinate system.
    • It was just a sketch, not a blueprint or a formal technical paper. Perhaps the original concept for the system was exactly like Daniel suggested. But when the system was being built, they hit the same issues that were mentioned here and decided to scrap the constellations idea, reverting to an address system more like a phone-number. Keeping the constellation symbols on the DH Ds would make sense, seeing as every race that used the system would have their own language. As was shown in an earlier episode, The Four Races used a joint language based on the table of elements for communication. Using constellations isn't a far reach...
      • Except that constellations are Earth-specific, so for anyone not from Earth they would simply be arbitrary pictograms.
  • This disposes nicely of the Fridge Logic behind eight-chevron addresses — a number in base 38 corresponding to an alternate galaxy makes a lot more sense than a random constellation does.
  • It is possible that Daniel's explanation is simply inadequate due to his lack of in-depth mathematical knowledge. Assuming that each symbol represents an unique point in the galaxy, it is possible that a more accurate description of its mechanism for determining an unique point within the galaxy involves using a formula that uses planes created according to some rule - the intersection of three distinct, non-parallel planes (whose normals aren't coplanar) will identify a single location in space. Perhaps the order is part of the process used to define the orientations of the planes.

The Ancients were capable of dialing buried gates and gates that are already active
Being the actual builders of the stargate, they had a lot more mastery over the safety precautions than anyone currently does. While they probably still couldn't transmit matter, it's a reasonable guess that energies could be transmitted to gates that would normally be unavailable. This would fill in the plot hole of Window of Opportunity, explaining why the SGC couldn't just bury the gate or dial another planet that was stuck in the loop. It would also be a factor in Reckoning, meaning the Dakara Device would be able to actually reach all planets with a stargate.

Stargate Command has a suspicion that matter stuck in the ka-woosh is not actually destroyed.
Maybe it popped up in the maths - there's a possibility the matter goes... somewhere. Until they are SURE the ka-woosh destroys the matter, they prefer to not use it as a garbage disposal - just in case.

The Stargate network occasionally auto-completes the dialing process on the receiving gate.
Certain moments in the series seem to show the Stargate on the receiving end starting up as the characters press in commands in the DHD, before the final symbol is entered. While this may be dramatic editing (since the receiving gate should have no idea to expect an incoming gate beforehand), think about it - there's a limited number of valid Stargate addresses, and the Stargate DH Ds use auto-updates to correct for stellar drift so they know which addresses are valid. So the network might prime valid gates on the receiving end in a similar way to how command-line completion works in Unix systems.


    The Goa'uld and the Tok'ra 

The Goa'uld language is the Lingua Franca of the Milky Way galaxy
We know that the Jaffa and many former Goa'uld slaves speak it, and we also know that most of the human population of the Milky Way are descendents of Goa'uld slaves. It's not that much of a stretch to assume that Goa'uld/Ancient Egyptian is still the dominant language on most of the planets that SG-1 visit.

Daniel and Teal'c taught the rest of the SGC personnel basic Goa'uld, and whenever we see Earthlings apparently speaking English to humans from other planets, they're actually speaking it instead. Admittedly, as a theory, it's kind of a stretch, but what are the alternatives? Human-made universal translators? Universal translators somehow built into the gate? I'd say of all the possible explanations for Aliens Speaking English, the Translation Convention is probably the least problematic.

Having a symbiote in you increases your intelligence
Okay we know that knowledge gets blended over but when faced with new situations like the SG team face it requires much more intuitive thinking. Vala was able to learn how to operate the Prometheus despite being just a common thief. Major Carter often complained about how we couldn't operate or understand alien technology but after having Jolinar, new technologies happen to be as challenging as a newspaper soduku.
  • It's more likely that she just got Jolinar's memories and that Jolinar was well educated in alien technology.

The Furlings are the Goa'uld or the Goa'uld's predecessors.
Who are the most advanced aliens who aren't in the four great races? That's right, the Goa'uld. Genetic memory can't occur naturally; it just doesn't work that way. The Furlings ascended, leaving behind their petty descendants who were more interested in conquering; this, using their genetic memory technology, evolved into a species-wide god complex.
  • So there are three tiers of Goa'uld, then? The Furlings, the galaxy-wide Goa'uld we know well, and the wild Goa'uld on P 3 X-888 with no blood naquadah?
  • Genetic memory could evolve naturally (starting with offspring inheriting fundamental instincts, then more complex memories) and would present a significant advantage in selection (offspring matures faster, knowledge is retained better, etc).

Alternatively, the Furlings did not ascend, but were wiped out by the Goa'uld. Either way, the Goa'uld fractured time and again due to their developing god complex and lost most of their technology.

  • In a universe with Psychic Powers, Time Travel and non-corporeal beings, how can you say "it doesn't work that way"? Their way is clearly not our way. Memory and mind in the Stargate-verse can transcend the physical.
  • Actually, genetic memory DOES exist in our world...the Goa'uld've simply found a way to break it and make it ridiculous.
    • As a support to this theory, if Goa'uld means god in the Goa'uld language then it seems reasonable to think the Goa'uld called themselves something else prior to developing their god complex. They could have been Furlings. Perhaps the Goa'uld were an offshoot of the Furlings in the same way the Tok'ra are an offshoot of the Goa'uld (the same species but completely different personalities due to the genetic memory chosen to be passed on and they go by a different name). If the Ancients were used to dealing good members of the Goa'uld species, that could explain why Oma was taken in by Anubis' act.

Anise/Freya was a Goa'uld, and she alone was responsible for the supposed za'tark problem
Anise/Freya created the supposed za'tark detector as a means to create za'tarks. The first thing she did on Earth was to make Astor kill herself to create paranoia. She then made sure that Carter and O'Neill came out positive so that they would be locked up and unable to stop the real za'tark, Martouf, from assassinating the President.

The za'tark "detector" only works if it can find a memory gap to exploit, possibly taking advantage of the mind's possibly vulnerable state as it tries to fill in missing blanks from a given situation. (Nobody's memory is perfect, especially in a stressful situation.) Daniel and Teal'c had been lucky.

When Anise/Freya retested O'Neill and Carter, she didn't expect that they could fill in the blanks. She didn't "trigger" them because she wanted O'Neill's DNA to start her own Goa'uld (hence, her trying to seduce him), and she likely knew that O'Neill would certainly not be in the 'mood' if anything happened to Sam.

The "nikta" is not the ass, but a part of the Goa'uld anatomy
Wouldn't be out of place.
  • Goa'uld take humans (or human-decendants) as hosts. Why would they make a comment like that based on their symbiont bodies rather than their hosts'? Also, a Goa'uld didn't say that line, Aris Boch, a human, did. ("Deadman Switch")

System Lord Ba'al = Baal, Lord of Terror
Consider. Overlord Baal is capable of body surfing every time his current body is destroyed and can even hijack multiple bodies at once! Therefore, somewhere along the lines, one of the Ba'al clones went through a Stargate that had Phlebotinum liberally applied to it and ended up in one of the Netherworlds. Through the same explanation that gave us Overlord Prier{e}, Lord of Terror Baal was born.

System Lord Ba'al = Baal, Lord of Destruction
The Soulstone and Goa'uld itself are related.
  • Alternatively the Soul Stones ARE the Goa'Uld, and Diablo is simply a heavily fictionalized myth version of an actual alliance in ancient time between Sokar, Baal, and a now-dead Goa'uld named Mephisto.

Ba’al was once known as the demon Bali
At that time, he had an Unas host, but was removed from it by a young Ancient boy.

Hades is/was a Tok'ra (or at least allied)
Kronos and Ares existence indicate the Greek pantheon were Goa'uld. Hades was pretty much the only guy there who didn't make a hobby of being a dick to mortals.
  • What about Athena? If I recall correctly she was one of the nicer gods. Certainly up there with Hades, anyway. She's not particularly nice on the show though, what with running the trust for Ba'al and all.
    • Tiresias would not say she was nice.
  • Hades kidnapped and married Persephone against her will, causing her mother Demeter to be so disheartened that it caused winter. He was also allies with/brother of Zeus and Poseidon, not two of the nicest fellows when it comes to humanity. Also, he specialized in Cold-Blooded Torture against people who dared offend the gods (as well as those who actually did something wrong). And allowing somebody his wife to come back from the dead as long as he doesn't look at her to see if she's following him, and then making her footsteps inaudible? Dick move. Still less bad than the Asgard Lokinote , who raped a horse in mythology.
    • He didn't rape a horse, he pissed Odin of so bad that he turned him into a mare, let horses have his way with him, and didn't turn him back until he gave birth to a bunch of monsters. Still, he did plenty of other dickish things, like tricking everyone into murdering Baldr or being complicit in the theft of the golden apples that kept everyone immortal, including himself.

The Tok'ra exist as the result of covert manipulation by the Ancients.
Egeria, the queen who founded the Tok'ra, is also the only Goa'uld we've seen to take on a role from a specifically Roman myth. The Ancients are explicitly associated with Rome (both in language and in their role as "road-builders"). Obviously when they communicated with Rome, they discovered Egeria attempting to set up a power base in Italy, convinced her of the immorality of the Goa'uld methods, and got her to go into hiding to try to stop them.

(Incidentally, this is also the Stargate 'verse's explanation for why Roman mythology is mostly cribbed from Greek mythology — the Ancients stopped any Goa'uld from gaining any foothold in the Italian peninsula, but they weren't willing to go so far as to prevent its inhabitants from worshipping the next nearest "gods".)

Ba'al has a symbiotic relationship with his host, much as the Tok'ra do.
This is why he's so much less of a Large Ham Card-Carrying Villain than your standard Goa'uld — their personalities have blended considerably over the 2000 years they've been together. (It also means that Vala is about to get a big shock at the end of Stargate Continuum — she's expecting to help support someone who like her was a passive observer of Goa'uld tyranny, when in reality she's going to end up having to deal with a man who was entirely complicit in it.)
  • Ba'al's host may in fact be the genius of the operation, which is why Ba'al never tried swapping hosts, and why he went to the trouble of cloning his host as well as himself.

Ba'al's host is his own Harcesis.
We already know that a Goa'uld queen can choose what they pass on to their spawn, so logically they could do the same with normal kids, since they also get the Goa'uld genetic memory. We know Apophis tried to pull it off, and given how terrible unoriginal he was, there's no way he thought of it on his own. He had to get the idea somewhere, and given how innovative Ba'al is, he probably thought of it first and, some time ago, pulled it off, probably with Anat if you go by the RPG's books. This is why he's so much better at everything than the other Goa'uld: there are effectively two of him in each body. It also gives a good excuse to reuse him post-continuum. So what if the Symbiote is gone, Ba'al's still there.

Before his exile, Anubis was in the entertainment industry.
He wrote teleball dramas, mostly made for Goa'uld audiences. He was exiled after writing one too many cliffhanger season finales.
  • Talk about getting Screwed by the Network.
  • Now I finally understand what "crimes unspeakable even to the Goa'uld" means.
  • His ultimate plot was not to conquer the galaxy but to continue his reign of cliffhanger finales. He succeeded in season 6 but barely failed in seasons 5,7, and 8, after which he was put on a bus to ensure that he never did it again, only to sneak past Oma to trick the Ori into doing it for season 9. The series was canceled after season 10 to insure he couldn't repeat that.

Most SGC personnel are at least minimally-proficient in Goa'uld
Jackson had to provide the translation early on, but over the years, most SGC personnel picked up the language, and eventually it became part of the training program. It explains why no-one seems to have any trouble communicating with displaced human populations throughout the galaxy (even if Goa'uld isn't their native tongue, it's probably a lingua franca of sorts.) By now, Jackson has proven himself indispensable in far more ways than just as a walking Universal Translator, so of course they keep him around.

The Goa'uld are capable of sexual reproduction
The powerful males seem to keep Queens as "mates" and Heru'ur has two Goa'uld parents apparently. It also seems very odd for the "drones" to be the ones who hold more political power than the average Queen. Instead the Goa'uld are quite capable of sexual reproduction but they prefer to use parthenogenesis to reproduce instead for whatever reason, perhaps they can't incorporate the host species' DNA to ensure host compatibility unless it's done asexually
  • Just to add further evidence, Apophis considered Klorel to be his son (and seemed to have a special relationship with him), rather than just considering him a symbiote born from his Queen. Also, Teal'c symbiote was able to show him a vision of Cronus killing his father which indicates that this symbiote had the genetic memory of Cronus. This all suggests that it's not just the queens passing on their DNA.

Ba'al's clones have no consciousness in the hosts
Ba'al copied the cloning technology from a group of humans who had previously cloned an Asgard. That Asgard had no consciousness, because nothing had ever been added to it. These same humans never received that technology to fix that. Later Ba'al uses that same technology, but he never needs to be able to copy the consciousness. Why? Goa'uld have their own built genetic memory, so any clone Ba'al makes of himself already is him. He copied his hosts too, but since there's absolutely no reason for it to contain the memories of his past hosts, why bother inventing the technology to copy a human consciousness to a clone? There isn't!
  • Of course, this means that the Ba'al getting extracted at the end of Continuum is completely pointless. They're going to end up with a vegetable Ba'al clone that has no mind of his own. Or if he does have a mind of his own, it's just a human copy of the symbiote.
  • Except that a Goa'uld gains the memories of its host. Which means that even if the clones Ba'al's host were blank slates, they'd still end up with the original host's memories on a secondhand basis. Of course, if Ba'al is like most Goa'uld and keeps the same host for as long as possible, that would mean that the host has thousands of years of Ba'al's memories to sort through. Thus, quite a bit more to deal with than Vala's brief time as Qetesh's host. Even with the memories of the host intact, he might still think of himself as being Ba'al.

Ba'al has pulled the cloning trick before
  • The Bible makes frequent reference to "the Baals".
    • Isn't that where that comes from?

Possible reasons Anubis was banished
  • Feel free to add your own:
    • Anubis was introducing bio-engineered humans with a gene that would cause them to reject goa'uld hosts into the domains of his enemies.
    • Anubis was developing a virus that would spread through the stargate network that would throw out the automatic recalibration of gate addresses, meaning that the entire network would be disrupted over time
    • Anubis was slipping information about his enemies to the tok'ra.
    • Anubis was using propaganda to set himself up as the one true god, inciting rebellions against all other goa'uld. It's possible he was the one that started the rebellion against Ra in the first place (based on the presence of fossilized anubis-like guards in one of the deleted scenes from the movie) and it took the system lords thousands of years to figure out who was inciting all these rebellions.
    • Anubis built either three-sided pyramids or four-sided motherships, sparing himself the cost of a dimensional manipulator.
  • According to the Stargate Wiki article on Ra (based largely on RPG story material), the "crimes unspeakable" angle seems to be pure propaganda. He was simply an old enemy of Ra whom the latter fought for control of the Goa'uld Empire and defeated. The only thing close to a crime unspeakable is that he killed their parent Apep, but Bra'tac stated in "The Serpent's Lair" that System Lords are most often challenged by their offspring so that was probably just a Goa'uld being a Goa'uld.
  • In my own headcanon, it was because Anubis' ascension was looked upon as poorly by the Goa'uld as it was by the Ancients.
  • It's possible that due to the effect of accumulated genetic memory each generation of Goa'uld simply gets more evil, thus explaining why Yu (who was the oldest and thus from an earlier generation) was decent by Goa'uld standards, and Egeria created the Tokra (and she must have been at least old enough to predate all the Tokra) but no good modern Goa'uld were seen. As a consequence, maybe Anubis didn't actually do anything more evil than your standard modern Goa'uld but he did it back when Goa'uld standards were lower (or higher, however you want to look at it).

The planet of the feral Goa'uld is not the Goa'uld homeworld. Or it is, but it isn't, really.
Thousands of years ago, an "older, wiser" species stumbled across a planet inhabited by a large, sentient, bipedal, reptilian species that was infested by a horrible brain-eating parasite. Being merciful and kind, they removed some of the unfortunate creatures from their homeworld to an experimental station on an uninhabited planet. However, they discovered that the two species had a symbiotic relationship. Without the weird worm-like creatures, the reptilians were reduced to animal intelligence and near-total amnesia. They also became sterile. The symbiote, meanwhile, slowly lost its intelligence and wasted away. Still creeped out by the idea of two species being linked that way, the scientists working on the project tried to make it possible for them to live separately. The result: the first Unas — intelligent, but forced to rediscover everything from firebuilding on up — and the first Goa'uld — ironically, true parasites, no longer dependent on their hosts for a brain boost and able to take control in a way that their ancestors could not. The scientists gave up and left and some of the feral Goa'uld later managed to kidnap Unas hosts and escape. The actual homeworld of the original, unmodified species is still out there somewhere.

The Goa'uld and Tok'ra are not intelligent.
They are basically hard drives of data until and unless they get into an Unas (for the old goa'uld) or a human (for the newer ones). They then use their host's brain to actually think,so their intellect is host dependent. This is one of the reasons they are so reluctant to abandon a given host and so picky about new hosts, except when they are very desperate-then they just act on instinct and possess someone.

The Goa'uld were engineered by some ancient race to be doctors / medical equipment.
Thus their natives healing abilities and genetic memory (so they can be good at healing).And it was the ancestors of the Unas who did it, instead of the Alterans, for once.

Previous hosts of Goa'uld can make their eyes flash at will.
I seem to remember Sam making her eyes flash in a training exercise where she was supposed to be either a Tokra or a Goa'uld, with no obvious tricks. She was using an external voice changer in that scene, though.
  • Sam and Daniel were involved in training recruits, where they were "playing" a Tok'ra and a Goa'uld. They used voice changers and things that made their eyes flash. It wasn't natural, it was tech they used for the simulation so it would appear as authentic as possible.
    • Where, though? Behind her eyes? Ouch...
  • The problem remains that such a technology would have to be either external, (in which case it'd have to be something like fiber-optic line leading from an external light source to contact lenses that are designed to glow gold when backlit); or internal, like an implant within or possibly behind the eye itself. The first method would be prohibitively expensive for a training exercise, and it would probably be very non-convincing, since the fiber-optics would have to be covered up with thick makeup. The second is way beyond the Tauri level of technology, and massively excessive for a training exercise as well. On the other hand we know beyond the shadow of a doubt that the Go'a'uld can alter the host's physiology to cause the eye-flash, since it happens within seconds of the Go'a'uld entering a host. That modification would likely stay around, and since the Go'a'uld control their hosts using the host nervous system, the eye-flash modifications would remain connected to the host's nervous system. My opinion is definitely that Carter, O'Neill, and everyone else who's been a Go'a'uld or a Tok'ra keep the ability. Which leads us to the inescapable conclusion that Jack makes his eyes flash when he's bored.
  • You can have glowing eyes in real life by using ultraviolet LEDs and contact lenses that react to UV light.

The second stargate fell out of use after Raiden became the last remaining lord of Earth
This WMG uses things from the RPG books as canon. One of the major questions of the Stargate franchise has been the question of why exactly the goa'uld stopped using the second gate. Based on the fact that we see more post-rebellion cultures throughout the universe than pre-rebellion ones, usage of the second gate must have been very common at one point. Even ignoring the RPG books, we know of several post-rebellion canonical goa'uld domains on Earth. So when did they all leave? And why?

For the when part, lets look at what was chronologically the last known goa'uld activity on Earth prior to the series. Barring the seth cults, there are two possible events that could have been the last. First, there was Sokar, who posed as Satan at some point during the middle ages. Given how widely spread the abrahamic religions were, Sokar's domain could have been quite grand at the time. The other possibility for a last event is during the mongolian invasion of Japan in 1288, when the goa'uld Raiden stopped the invaders and banished them to the planet from Emancipation.

Okay, that's the backstory out of the way. Now for the the WMG and 'why' parts. Let us presume for a moment that there was a third major goa'uld domain on Earth at the time: That of Tengri, the chief god of the Mongolian hordes. Tengri sought to establish himself as the supreme ruler of the Earth. He'd already attacked India and driven out the remaining hindu gods. During the 1240s (fitting with the real-life Mongol invasion of Europe) he turned his eyes on Sokar's domain, attacking him and driving him off-world. He then turned his eyes east, attacking the domain of Raiden during the 1280s (the real-life Mongol invasion of Japan). Despite his much smaller Terran domain, Raiden managed to defeat Tengri and kill him, leaving him as the last remaining goa'uld lord of Earth.

Except Raiden didn't have much use for the Earth. His empire used ships as transportation rather than relying on stargates (to the point most of his worlds didn't even have any stargates). Plus, since his empire was described as bordering that of Yu, it must have been quite distant from Earth. Even with the improved goa'uld speeds during the SG-1 era, Yu's domain is still too far from Earth for him to be interested in it. Keeping domain over the Earth simply wasn't feasible for Raiden. He would still occasionally visit the planet to gather more human stock for his worlds, but even that ended. Presumably, he fought Ra at one point and lost, retreating to only his core worlds. All the other goa'uld assumed that Ra had ceased control of the Earth again, but Ra didn't actually know that he could lay claim to Earth. No goa'uld tried dialling Earth during this period, as they were too afraid to anger Ra. It was only after Ra had died that goa'uld started trying to access Earth again, and by that time the Egyptian stargate had been uncovered, meaning they dialled in there rather than in Antarctica.

Goa'uld developed their current abilities due to competing with the Unas
The Goa'uld would seem to be intelligent, even outside of their hosts. I'm basing this on the idea that Egeria was able to make decisions about what to pass on to her young and to sabotage tretonin even without having a host and the Tok'ra generally could make a decision about whether to take someone as a host and choose to enter through the mouth rather than the neck, suggesting it's not just instinctual. However, it seems strange that the Goa'uld would have evolved high intelligence given they started off just swimming around in water, unable to speak or alter their environment (so where high intelligence would serve no obvious advantage). My idea is that, while the first Goa'uld to take Unas as host may have just essentially been animals, they could have spent thousands, even millions of years taking Unas as hosts (at which point they could actually use language and alter their environment) before they evolved to a higher intelligence. In particular, Goa'uld in Unas hosts would have had to compete against regular Unas during this period. The first Goa'uld taking Unas as hosts may have just functioned as regular parasites (essentially living off the Unas). However, an Unas with a Goa'uld would be at a disadvantage compared to regular Unas and may get killed or even kill themselves and certainly wouldn't give the Goa'uld much chance to return its young to the water. They would need to develop the ability to control the host to prevent this. Once they could control the host, it would be advantageous for them to develop abilities which give them an advantage over regular Unas; higher intelligence, the ability to heal and strengthen the host, genetic memory so their young didn't need to spend time learning their skills. Naturally, as these skills developed, the Goa'uld who possessed them would become dominant.

These days, Goa'uld basically is English
Most of the time, when you see Jaffa or Goa'uld speaking they actually speak English with the occasional Goa'uld word thrown in, even if they're speaking to someone else who speaks their language. That's kind of weird, if you think about it. If they're speaking Goa'uld and it's just translation convention, all words should be translated to English. If they're speaking English, firstly that would be odd, secondly one wonders why they would slip in words from a different language. When Rya'c was getting married, he first introduced Kar'yn as his "sim'ka". She then told him not to use those old terms and said they were betrothed. What if the words we think of as Goa'uld words are, in fact, archaic/overly formal words such as whence/thou/thine? When it sounds like someone is speaking Goa'uld (as in all Goa'uld words), they are really just speaking "pretentiously" (so using a bunch of archaic words in a row). The Goa'uld are most likely to do so, both because of their fondness for melodrama ("thou shalt prostrate thy heart before thy god" just has a certain ring to it that "you will throw your heart to the ground before your god" doesn't) and because, due to their age and genetic memory, they remember when the archaic terms were more common. The Jaffa just do it without really thinking about it, in the same way you don't really notice that you're using Latin when you say "vice versa" or quoting Shakespeare when you talk about a "green-eyed monster". I figure due to their rigid culture, documents will generally use more formal, archaic terms (and just because they use English words doesn't mean they use our character set) which is why translation is still necessary. It would also go some of the way to explaining why so many people speak English (at least in the Milky Way).

As an example of where this seems apparent, in "Moebius" (alternate timeline) Teal'c was confronted by some Jaffa from Ra's time. Even though he was speaking to Jaffa, he spoke in English. They responded completely in Goa'uld (maybe they understood him, maybe not, it wasn't clear). Again, it makes no sense from the perspective of translation convention. However, if these Jaffa from the past were naturally using archaic language while Teal'c being from the present was using the modern form of Goa'uld (mostly English) it makes sense.

Ba’al is still alive at the end of Continuum as he never travelled back in time

When SG-1 travelled back in time in Moebius, they were smart enough to leave themselves a message just in case something went wrong. Ba’al is a Magnificent Bastard and not nearly as arrogant as most Goa’uld. He would have done the same.

When he arrived back in time in Continuum, two versions of himself would have existed at once. Presumably, in the alternate timeline, at some point Ba’al had to either kill or incapacitate his younger self to stop him interfering with his plans (and so he could take his place). The fact that, when Mitchell kills Ba’al in 1939, the timeline goes back to normal suggests that his younger self was still alive at that point.

Ba’al preserved a mobile phone for half a century make to one phone call. The guy plans ahead. It’s probable that he didn’t just go straight to the ship. More likely, he made sure to go back in time early enough that he could set up a message somewhere so that, if things didn’t work out, he would eventually find it in the present (before he travels back in time) and know not to travel back in time.

The upshot is that Ba’al is still in the present (and alive) at the end of Continuum.

The real reason the Goa'uld don't like entering through the mouth is because the natural instinct would be to bite them
If a Goa'uld started climbing in through your mouth, there would be a point where they entered your mouth where they didn't have control of you yet. You'd bite.
The Tok'ra will one day save themselves by creating a blank queen
We've seen Goa'uld queens create "blank" Goa'uld (like Anubis was doing). With the fall of the System Lords, there's bound to be at least one Goa'uld Queen who'd be willing to do so for the Tok'ra (or at least Tok'ra posing as Goa'uld). Of course, at some point when making new Goa'uld, you must end up with new Queens, so eventually you would get a blank Queen. Being a blank slate, this Queen could be taught the values of the Tok'ra from scratch. In addition, any new Goa'uld that it created with the Tok'ra (note that at some point the non-Queen Goa'uld must pass their DNA on) would have almost entirely Tok'ra genetic memory (supplemented only by the memory of the time they'd spent teaching it their values).

    The Jaffa 
Jaffa helmets have built-in Universal Translators. That is why everyone seems to speak in English.
In the first seasons SG-1 used the translators that were salvaged from dead Jaffa, and later they managed to reverse engineer the technology.
  • Make sense if you think about the first episode. They go to Abydos, where everyone speak the heavy accented English Daniel taught them. Then they go to Chulak where nobody speaks in English except for the Goa'uld and the jaffa. In later episodes the language problem disappear and everybody seems to speak perfect English except for the people of Abydos who still have the same accent because unlike anybody else the team meet, they actually speak in English.

The sodan eat their goauld symbiotes after they mature.
Well why not, a warrior's gotta eat. And if the system lords do it, why not their slaves?
  • Except that Goa'uld are probably poisonous to humans or Jaffa. They have blue blood, their biology is certainly too alien to be digestible. That's certainly the reason why Daniel didn't eat the symbiote despite Shaka's insistence, besides it being yucky. Unas have certainly developped a stronger digestive system, and Goa'uld can make their hosts resist the poison.

Tretonin allows Jaffa to live far longer and slows down aging
Take Teal'c for example who should now be older than Bratac but all he got was a patch of white.
  • This helps explain why he so readily offered to "stay behind" and keep 50 years permanently added on to his age in the series finale, as, aided by Tretonin, he'd still be assured of living at least as long as his friends and teammates once the time slowdown was ended.
  • That would nicely handle the potential plot hole, anyway.
  • Tretonin gives him the same life span he would have had if he still had his goa'uld.
    • It can't possibly. In "Maternal Instinct" Bra'tac is in his mid-130s. He says in that episode that he's within a couple years of his symbiote outgrowing him, but that he's too old to take another symbiote. That puts the Goa'ulded Jaffa lifespan somewhere below 140.
      • I believe it's stated that no symbiote would accept him. Tretonin, being a medicine, takes the acceptance part out of the equation.

    Time Travel and Alternate Realities 

Jenny from "1969" is Jenny from Stargate
The young female hippie from the episode "1969" and the Chevron Gal in Stargate are the same person. Both are named "Jenny" (the latter according to the credits), their appearance is similar (aside from hair color), and the Stargate Jenny is just about the right number of years older.

You see, after SG-1 escaped through the Stargate back to 1999, the military searched the area, found the hippies, questioned them about SG-1, and then sent Michael to Vietnam, where he died. The Stargate Program was then started to investigate what happened (creating a Stable Time Loop), and Jenny somehow became involved, possibly since the military didn't want to bring any more civilians into the fold.

Jenny eventually ended up being the Chevron Gal at the time of the first Abydos mission. She was fired after the project got mothballed and was not brought back when the program was restarted; hence the reason there are civilian technicians in the film and military technicians in the series.

  • Time travel in Stargate doesn't seem to work that way. "2010/2001", "Moebius", etc. clearly show that it works under the "mutable history" model. "1969" can be interpreted under the mutable model as well. See this. However, the only aspect that needs to be changed due to this is the reason for the Stargate Program's creation. After all, a mutated mutable timeline can resemble a Stable Time Loop if the past isn't changed much.
    • Time Travel in the Stargate Universe seems to work both ways; 1969 requires a Stable Time Loop. Perhaps you can trigger one if you work hard enough.
    • The time loop in "1969" is stable because the resolution of the loop does not prevent the creation of the loop. They don't tell past-Hammond not to let them go on the current mission. Even if time is mutable, since nothing critical to the loop changes when the loop is formed, it never goes away.

Cam Mitchell didn't exist until the end of season eight
Season eight ends on time travel, and it's implied that SG-1 managed to change a little more than they thought they did during that particular adventure. (Jack's fish, for example.) Mitchell had never been so much as alluded to before the premiere of season nine, despite apparently having been involved in events before that. Obviously, seasons 1-8 were one timeline, in which Mitchell was never born. After season eight, the timeline we'd been watching stopped existing, we caught a glimpse into another timeline where the Stargate program was never created at all, and then switched permanently over to a timeline where there were fish in Jack's pond and Cam Mitchell existed.
  • Since when has it been thought otherwise?
  • I always imagined that he existed, but he wasn't part of the military, or at least had never joined the Stargate program, since it was a Close-Enough Timeline .

The alternate universe from "The Road Not Taken" is one of the ones Daniel finds in the Quantum Mirror in "Point of View".
In "Point of View", while they're in Kowalski's universe, Daniel has to scan through a bunch of other alternate universes to find the one they came from. There's a near miss that looks almost exactly like the right universe, except that Carter is a captain rather than a major. Seven years later, in "The Road Not Taken", Carter finds herself in a universe that again looks superficially similar to hers (though the longer she stays the more different it looks), except that she's a major instead of a lieutenant colonel.

The fish in O'Neill's pond were erased by a crack in time and space.
They went the way of the ducks in the Leadworth duckpond, and when SG-1 altered history and then set it right the time crack was negated somehow and the fish came back.]]

    The Ancients, the Ori, and the ascended 

The ancients got their knowledge from an even older race
Like the Precursors in Halo.

The ancients are actually humans gone back in time
Well even the ancients have to come from somewhere. The Ori are probable anti-evolutionist anyway.
  • So where did these humans come from originally? And how is it that nothing the "time-traveling Ancients" do screws with their future Ascension in the first place (see "The Grandfather Paradox")
    • Simple, the ancients were originally descended from the humans that evolved naturally on Earth. It's canon from SGU that large groups of people can time travel thousands of years into the past, so why not millions? Intergalactic travel is also relatively easy once a society reaches a certain level of technological prominence and access to the requisite power sources. From there, all we need to assume is that the Alterans either maintained or (more likely) at some point implemented a program to return their population to their original genetic composition. This really is the only way to explain the identical genetics given the overwhelming proof of natural human evolution on Earth. An artificial seeding should look very different.

    • It's also impossible to know whether their time travel interfered with their ascension from our current information. It's possible they managed to enter a stable time loop. Likewise, it's just as plausible that our present timeline is one that overwrote the original when the time travel occurred like we saw in Moebius.

MacGyver is an ancient
He could build anything out of anything after all.

The Ori are the pah-wraith and the ascended are the wormhole aliens
Wormholes exist in other realities so the ones from star trek and stargate are one and the same.

The Ori spread the use of English
It would be timewasting to establish a common dialogue so the Ori secretly sent a means of teaching English.

Near-Ascended Beings Can't Directly Kill People
There is something about the super-advanced human brain that prevents you from going around killing people. Telekinesis would make killing people easy, just choke them or break their necks or even just damage the heart or brain. But the only times I have seen near ascended beings kill people with telekinesis is indirectly. For example, pulling them onto a 50,000 volt metal plate or throwing them long distances. Even Kalek, homicidal maniac that he was didn't kill any of the SGC soldiers he was fighting by choking them, throwing their bullets back at them or just crushing them against a wall. Adria never killed anyone either (directly). The only times a direct kill has been done is but one of Nirrti's experiments (and he wasn't really near ascended) or by a Prior, who the Ori probably reprogramed to allow that, since he wasn't close to ascension anyway.
  • Did you miss the part in "Counterstrike" where Adria choked a Jaffa to death with telekineses, brought him back to life, and then snapped his neck, again using telekineses? I'm pretty sure that counts as "killing people".

It was the post ascension ancients that were part of the alliance of four great races
Mostly a way to reconcile all the weird stuff going on with the timeline.The timeline for the ancients would basically go like this:1) Ancients flee from Ori galaxy;2) Ancients seed humanity;3) Ancients flee to Pegasus;4) Ancients build up a civilization/the Asgard quickly develop new technology/the nox something something/ the furlings something something;5) Ancients get their collective asses kicked by the wraith/The Asgard travel to the milky way/the Nox something something/ the furlings something something;6) The post-ascension ancients ally themselves with these dudes to discuss philosophy all day.7) After a profound argument by Nox philosopher Telan, the ancients realize that, from a universal standpoint, a policy of non-interference would be the most logical according to their core beliefs.8) Ancients and Nox stop talking to everyone and the alliance members don't really have any reason to contact one another anymore.

Alternate 4,5 and 6 from the previous theory
4) Ancients build up a civilization5) Ancients get their collective asses kicked by the wraith6) The ascended ancients artificially enhance the three races as to leave behind a legacy, teaching them stuff like the universal alphabet. This version possibly includes the four races never really meeting very often, with heliopolis being built by the furlings as a museum, rather than a meeting place.

The remaining three of the four great races (Furling, Asgard, Nox), realized that ascending doesn't solve any problems.
They realized that ascending is really a bit of a wash after seeing it didn't really improve on the quality of life.
  • Who's to say the Nox haven't ascended? They're able to hide cities, resurrect their dead, etc. Perhaps the form that is manifested in the series is what we see in our reality, even though they're already ascended?
    • It appears that the 3 of the 4 'Great Races' encountered have all hit the wall, as far as their species goes. The Ancients ascended, becoming immortal and all knowing (For the most part). The Asgard, through reckless scientific advances, sabotage their own species. The Nox never ascend because they don't have a need to do so - They're functionally immortal and want for nothing.
The Ori have non-believers killed because otherwise they could used to weaken their power.
When people worship the Ori in the matter as set by the rules of Origin, the worshipers somehow create a "positive energy" which increases the Ori's power.

The reason the Ori have zero tolerance for non-believers is that, if enough non-believers were ever to get organised and work as one, then they could focus their anti-Ori beliefs to create a "negative energy" which would weaken the Ori enough that they could be defeated or even killed by mere mortals.

This is why they destroy worlds that do not bow to the Ori. They want to prevent that possibility of non-believers working together from ever happening.

Repli!Carter survived
When her ship was hit by the energy weapon of Dakara, we see the ship disintegrate and we see both her and Daniel disappear in a flash of light. Daniel survived because Oma ascended him just before he would have died. However, Daniel had ascended before, and would presumably know quite a lot about the process as a result of being ascended and from studying the process independently. When Repli!Carter fought Daniel, they both gained each other's knowledge. Perhaps Repli!Carter figured out a way to ascend a split second before the weapon destroyed her ship.

The Ancients are Jedi and Elves
Star Wars occurred "a long time ago in a galaxy far, far away" and the "advanced humans", a.k.a. Jedi, were part of an evolutionary process towards ascension. Eventually they came to earth as "the oldest race" but when they got old they didn't die but "went to the gray havens". All three groups wear similar clothing and have a deep reverence for the natural world and try not to interfere with humanity as much as they can.

There are other Ancients still alive, in the same way that the crew of the Aurora survived.
The Aurora could not have been the only ship to think of that tactic. Hyperdrive but not sublight engine destroyed, the crew of the ship set off towards the nearest galaxy, so that they, at least, could make it to civilization without dying of old age.

The Dakara Device didn't create life, but implemented an evolutionary path on existent life
Okay, in the show it's mentioned that humanity was created by the ancients. While it's never explicitly stated, it's likely that the creation of humanity was one of the results of the first usage of the dakara superweapon. However, humanity being created by the ancients never made much sense, since there's an extensive fossil record of human evolution on Earth. One of the earliest episodes, the Broca Divide, even revolved around humans 'devolving' into an earlier form, so that can't be dismissed in the show's canon. So how can we reconcile those facts? Well, what if the Dakara superweapon affected already existing natives so that they would eventually become Ancient-like beings? It would also explain why Evolutionary Levels are a thing in the setting, as well as the numerous Human Aliens encountered, such as Aris Boch's race, those guys from the planet of the singing plants, or the humans with yellow eyes from "Scorched Earth".

Anubis was working working for the ancients
The ancients must have known that after leaving their technology scattered all over the galaxy, someone would eventually accidentally contact the Ori, who would then convert the galaxy and use the power gained from their worshipers to go after them. However, their agreement with the Ori is that they can't interfere. Their solution? Claim one of their people wasn't right for ascension and send him back to our plain of existence, then secretly have him find their technology and remove any reference to the Ori or how to contact them. Also, if the Ori ever find this galaxy on their own, it will be best if it is under one ruler who knows how to use all their more advanced technology. It also may not have been a coincidence that after the Asguard started giving the Tau'Ri technology that may have allowed them to accidentally contact the Ori by finding the Glastonbury cavern, Anubis became interested in the Dakara weapon. The Ancients were going to prevent the Ori from gaining more worshipers and using that power to kill them by eliminating the population of this galaxy.

The Ori invasion of the Milky Way was a preemptive strike, believing Daniel and Vala's actions as an attack
When Daniel and Vala used the ancient device and revealed they were from another galaxy, the Ori might have seen it as the beginning of a foundation to undermine them. So, worried the Ancients might try something, or worried that their structure was in danger of collapsing, they made an attack on the Milky Way Galaxy to eventually fight the Ancients in order to protect their way of life.

Everyone speaks English because of Janus
Basically, "It's Good to Be King" showed a prophecy up to the present day which suggested that the Time Jumper had at some point been used to travel to the present. This would have allowed the Ancients to learn modern English. Then at some point in history, they passed it on to the Goa'uld (who passed it on to the humans they transplanted) and maybe the Wraith and some Pegasus humans as well. The language stayed fairly static over time (rather than changing in the same way Old English became Modern English) due to the age of the Goa'uld and their genetic memory (essentially they all remember the language one way and hence keep it that way and force others to too). The Wraith, given their long life and hibernation periods, would similarly keep language fairly constant while the humans of Pegasus may intentionally do so (given gate travel is more common in Pegasus, it would be useful to maintain a common language for everyone).
The Ori were never as highly ascended as the Ancients
In "The Ark of Truth" at the start, the Ancients mentioned they were "so few" compared to the Ori. While it is possible the balance changed under time (this was pre-accension so there was certainly time for populations to have shrunk or grown) there's no reason to assume that the Ancients would now have an advantage in numbers. Having human worshippers supposedly added to the Ori's power and they had a lot of them. Even with the entire Ori galaxy's worth of worshippers, confronting the Ancients head-on wasn't worth the risk to them to just do it. The fact that they bothered with it though suggests the power they were getting from these worshippers wasn't insignificant, either. So even with a significant power boost and a likely numerical advantage, they were still far from guaranteed an easy victory over the Ancients in a straightforward battle. The Ori clearly expected to draw power from the people they converted in the Milky Way galaxy (otherwise, what's the point?). So when Adria lost her followers in the Ori galaxy, she still had all of the followers who were in the Milky Way galaxy and everyone who had been converted (which did include many planets) so her power was still being boosted by a non-trivial amount and she and Morgan Le Fay still just ended up battling on equal terms. This all suggests to me that in the same way there are different levels between human existence and ascension, there are different levels of ascension and the Ori were unable to obtain a level as high as the Ancients.
Pre-ascension Ori already posed as gods
The Ori were apparently obsessed with religion while the ancients were obsessed with science. The question is, how did they get from there, to posing as gods? While it's true that not all religious people believe in a higher power, if you did believe in actual gods then you'd be a bit more worried about posing as one. There is of course the possibility that they were expecting to meet their deity of their choice after ascension, ascended and didn't meet them and it resulted in a fit of nihilism. Alternatively, the Ori were religious in the same way the Goa'uld and Jaffa were (some of them believed in false gods, others were false gods). Some Ori began posing as gods through advanced technology (note that, as advanced as they may have been, it doesn't mean there still couldn't have been varying levels of technology within their society) and getting the others to worship them. Some of them may even have been on the path to ascension, showing some early powers (possibly helped by some technology like Khalek was) and may have been able to tap into the energy from the people's worship, essentially promising to help people ascend along with them (as the post-ascension Ori would come to promise). In the end, the "gods" among the Ori were able to ascend but refused to help the people below them. Eventually, when the people below them began to doubt them and were no longer useful, they wiped them out and started again.

Grace is an Ascended.
She was the only one Carter "hallucinated" that wasn't from her memories, so she must have been real. Hallucination-Daniel's cloud theory doesn't explain why the cloud continued to corrode the ship even after Sam started talking to Grace, so she must have been an Ascended fulfilling the role of Spirit Advisor just like Daniel did when he was Ascended.

    The Furlings 

The Furling were/are dragons.
  • Because how epic would that be? Also, Asian legends usually paint dragons as wise, ancient creatures that while benevolent were totally capable of ruining your day if they felt it was necessary — doesn't that sound like a people each of the three Great Races already encountered would get along with?

The Furlings are the Aliens who crewed the ship in "Grace"
  • No real evidence to back this one up beyond the fact that the unknown aliens from grace were considerably advanced (Sizable ship, teleport technology, advanced weapons, etc) and that they understood English (POSSIBLY indicating involvement with either a human group or the ancients/asgard, or just really, really good translators). The alien ship appeared to be comparable in some ways to Asgard tech (Asgard style teleports as opposed to rings, energy weapons that didn't appear to be similar to Goa'uld weapons or Ori Beam weapons) so it is not entirely inconcievable that the Furlings, as part of the alliance, shared aspects of technological development with the Asgard, or at least influenced eachother in that regard.
    • Personally, I'd just find it amusing to find out that the Furlings are a bunch of A**holes who cruise around the galaxy shooting at everything that moves.

The Furling are humans from the far future.
  • Their many time-travel experiments nearly destroyed history as we know it, so they communicated with the other three Great Races from the future and guided them along to ensure history happened the way it did originally.

The Furlings were Replicators, before they became evil.
Bit of explaining to do, bear with me. Reese, the robot girl who created the Replicators, was created by a priest of the Furlings, who (much like the Goa'uld) pretended to be gods on many planets. She was able to create Replicators because she was programmed to do so by the priest, who got the coding directly from his gods. The Furlings, in the meantime, were suffering from errors that were passed down into all existing members of their species (similar to the Asgard terminal illness, perhaps) and needed new ways to reproduce indirectly, so that the new Furlings wouldn't have the same fatal errors they were having. The plan was going smoothly, Reese had the programming, but when she turned out to be child-like, acting on whims and emotions, they realized they had made a great mistake, as she passed down her emotional control to the new Furlings. In their attempt to wipe the slate and get rid of Reese, the turned her entire planet against her, only to have her and her Furling army win. Having failed, the Furlings left, refusing to acknowledge the new Furlings as members of their species as they themselves either died out or became as feral as the other Replicators due to their errors. And so the Replicators became a great galactic power as the Furlings disappeared entirely, forgotten by members of the Four Races to distance themselves from the new galactic scourge.

The Furlings are the "giant aliens" from Crystal Skull.
The ones with whom Daniel's grandfather was left at the end of the episode. They seem super-powerful, they have very advanced technology, they are shrouded in myth and awe... sounds like one of the Four Great Races to me.
  • Alternatively, they're failed Ancient experiments for ascension. They got trapped in their current limited form, but require a high level of radiation to stay intact/alive. The giant pyramid was designed as a place where they could live. We know the Ancients have the technology for shifting dimensions and building a sufficiently large structure. The crystal skull is a symbol for ascension, meaning clarity of mind or some other philosophical Ancient thing. Or maybe, ascension was a success, and the pyramid is what the hall of fire is to the Ori - the place where their energy bodies are located by default. They choose to manifest themselves as giant aliens rather than a raging inferno, and aren't active enough to warrant a priesthood. The skull itself is meant as a way to ask for an audience without having to invade one's body.
  • Expanded Universe materials call the smoke aliens Omeyocans. It seems the Furlings are doomed to be the series' ultimate Noodle Incident forever.

The Furlings are Ewoks

The Furlings did not call themselves that
The Ancients, Asgard, and Nox came up with that name, on the basis that the Furlings' own name for themselves was way too pretentious. I mean, seriously, "the Time Lords"?
  • (looks at her SG/DW crossover) That is now my personal canon. And it explains why you never see the Furlings — they all got time-locked on Gallifrey after the Last Great Time War, except the Doctor and the Master.
    • Picturing the Doctor as a giant teddy bear: Awesome.
    • Headcanon accepted.

It's parsed as Furl-ing, not Fur-ling.
The few examples of Furling tech the Tau'ri run into during the show's run do things apparently related to folding space in some way (instantaneous transport, hiding a moon, etc.). They weren't called the Furlings because they were furry, they were called the Furlings because they could furl space.
  • Of course, that doesn't stop them from also having been furry.

The Furlings are the little animals from Once Upon a Forest.
They're highly intelligent from a young age with the ability to assemble a highly effective flying machine in mere hours or even minutes out of entirely natural resources. Something this intelligent and environmentally aware would have gotten along with the Nox at least. It may not explain why they were promoted above the title of furling because of this feat, but it's as good a lead as anything else here.

The Furlings are lizard people.
Then the Ancients first encountered them (via radio transmissions through a Stargate), they translated the race name as "Furling." Looking forward to meeting such an obviously advanced and friendly race, they welcomed them. . . only to be shocked when giant lizards stalked through the 'Gate. There was. . . a mild misunderstanding, but the Ancients and Furlings eventually reconciled their differences. In the Furling language, "Furling" translates to "Scaled One."
  • This would make a certain amount of sense. The Ancients were basically human. The Asgard said their original form was similar to the human body. The Nox look essentially human-like. Yet species like the Oranian, the Serakin and Unas have distinctly reptilian traits. Perhaps one of the four great races had reptilian traits and was responsible for seeding much of the non-human life in the galaxy.
The Furlings are tree-people
If you look at what we know of the Four Races, you'll find certain similarities to Tolkien's races, especially as they were in the Third Age:
  • The Ancients are Men, of course. (Probably Numenoreans, if you want to get specific.)
  • The Nox writing system looks very Elvish. They're also close to nature, long-lived, and have a policy of keeping to themselves and avoiding the more warlike races.
  • The Asgard are associated with Norse culture, have a runic alphabet similar to Dwarvish, are culturally focused on making and building things, and are more willing to associate with us lowly mortals than any of the other races.
So if you look at the four intelligent races who first inhabited Middle-Earth, what's not visibly represented in the Stargate universe?


As a plus, this also explains why so many worlds have trees on them. There are actually Furling settlements everywhere.


     The Asgard 

The Asgard naming the ship from the Season 4 opener the "O'Neill" wasn't a compliment.
It may have been of the highest technology, but it was a finicky, troublesome prototype only designed to get the job done — possibly destroying itself in the process.

Asgard computer interfaces are the pinnacle of user-friendly.
In "Nemesis" O'Neill was able to operate an Asgard computer with no instructions, no real tech skills, or any knowledge of the Asgard language. There is only one explanation — over the millenia, the Asgard have made multiple breakthroughs in computer interface design, resulting in systems that are incredibly intuitive, efficient, and user-friendly.
  • Further evidence comes from the ability of Wraith to operate the Daedalus. The human engineers designing the Daedalus would have incorporated the superior Asgard interfaces into their own technology. Unfortunately, that means that just about anyone could operate the Daedalus — including the Wraith.

Over the course of the series, the amount of Asgard alive drops to the single digits. (warning, ending spoilers)
Almost all Asgard died out in the replicator wars. The only slightly densely populated area was the Asgard homeworld, which was conquered, and even that had only a few hundred or thousand running around. The amount of Asgard living on other planets ranked in the mere dozens. Remember they haven't been capable of sexual reproduction for the last 50 million years[[note]]statistically,:With Earth's suicide rate, (one in every 10,000 per year), assuming their population was 10^12 (a trillion) people, they would have died out in less than 300,000 years, if nobody was born in that time[[note]]. Most of these were killed when the replicators escaped the black hole and started spreading again. Each Asgard ship is piloted by only one Asgard, but there are only a few ever shown. By the 10th season, most Asgard have become depressed by their cities being overwhelmingly empty and slowly decaying, most of their loved ones having died, and even having become obsolete in the defense of other people. They have become unnecessary, are unhappy, have no hope of ever rebuilding their civilization (they're infertile, and all the scientists who were researching improved cloning technology were slaughtered). In the last episode, the last two or three Asgard left alive decide to just quit. Their hopes have been shattered, their work undone, their friends and family brutally killed, their very species out-thought and outfought by any who chose to ally or attack them. It's not an Idiot Ball that caused them to blow themselves up, it's just the suicide following the depression from being the Cosmic Plaything subject to every Diabolus ex Machina the writers could throw at them.
  • In one episode, O'Neill is summoned to the Asgard counsel chambers, which is cavernous and full of empty seats.
    • They where capable of sexual reproduction until some time thousand years ago or so, if memory serves, if nothing else, at least up to 30000 years ago, according to the wiki. There's no evidence they where even around 50 million years ago. That said, I do agree ther population had likely been low at the start of the show and only worsened as it went on before the series finale.

The reason the Asgard were in our galaxy in the first place was the study of the Gou'uld as a means of stopping their genetic problem
If they could transplant their consciousness into one it may have solved a lot of their issues. Unfortunately it didn't work and the Asgard just ended up in a picky relationship with a frustrating alien race.
The Asgard named their ships after humans who had special contact with the Ancients or Ancient properties due to their respect for the Ancients
They named a ship after O'Neill and one after Daniel Jackson. They didn't name one after Carter or Teal'c even though all of SG-1 had saved them together and Carter really did it alone in "Nemesis". What makes O'Neill and Jackson special? Well, O'Neill had the repository of the Ancients downloaded into his brain (before they named a ship after him) and possessed the ATA gene. Daniel, meanwhile, was not only an expert on the Ancients but was even ascended (before they named a ship after him). Maybe their Ancient-ness was the criteria that made the Asgard consider them worthy of having a ship named after them.

Glasses in Stargate are the opposite of goatees in Star Trek.
Daniel's incident with the sarcophagus that chewed up his soul, or whatever, progressively corrected his vision. If his vision was considered normal for him (so the sarcophagi didn't bother "fixing" it), his vision should have stayed bad every time he used the sarcophagus. But when he went all Dark Daniel from abusing the healing powers, he didn't need his glasses. Their loss must have been a visual representation of his soullessness, or whatever, just like Mirror Spock's goatee and the beards in the Middleman alt-world special.
  • Later, Daniel gets given a vision of what would happen if he had the knowledge of the Goa'uld. Among other things, he loses his glasses. Coincidence? I think not...

O'Neill is a Troper
Think about it.
  • Canon, isn't it?

The entire series is Teal'c's dream. The only real part is the "normal world" in "The Changeling".
Come on, somebody had to propose it. (It's the basis for one fanfic community as well.)

Merlin's tablet was encrypted with his public key
  • What, you think Ancients are going to go for a substitution cipher?

The movie Stargate occurred in an Alternate Universe in relation to the SG-1 universe.
Well, it just makes a sort of sense. The alternate Samantha Carter says in "There But For the Grace of God" that alternate universes differ in their degrees of likeness to each other. It's not inconceivable that there's an alternate universe in which everyone looked different, O'Neill had only one L in his name, and Sha're was called Sha'uri.
  • And Lucius Lavin somehow ended up being an Earthling scientist. See here.

Daniel never actually descended
According to a somewhat crackish theory that this troper read he ascended that first time and never actually came back. He just raised a homunculus with his non-ascended memories to act as his pawn in the material universe via some sort of ascended loophole. Each time one homunculus gets itself killed, he manufactures another one.
    Connecting Stargate SG-1 to other works 

The Star Wars galaxy was colonized by the Ancients, who go by the name "Whills" there.
This explains the apparently-independent evolution of humans in the Star Wars galaxy: the Ancients seeded humans and near-humans there before ascending, like they did with the Tau'ri. Powers attributed to "the Force" stem from residual Ancient genes and Force ghosts are ascended beings. Qui-Gon, self-admittedly, received the knowledge of ascension from the Whills, who are already-ascended beings (ergo, the Ancients). Oh, and Stargates? They exist, albeit in more limited quantities and less compact form; presumably, that galaxy was colonized long before the technology was perfected.
  • Star Wars exists in the Stargate-verse as fiction, but it could fall under the Literary Agent Hypothesis. In early drafts of the SW screenplay, the story was framed as being told from the "Journal of the Whills". Perhaps this exists as a document in the Stargate Verse.
    • Alternatively, George Lucas is an alien, much like Martin Lloyd of Wormhole X-Treme.
    • Even more alternatively, Star Wars is a highly fictionalized version of a real war fought between different factions of Ancients in the Milky Way galaxy. It's referred to as being "A long time ago in a galaxy far, far away..." because it's being told to the modern inhabitants of Atlantis. It exists as fiction because someone told the story to Lucas on one of their unintentional time-traveling trips.

Sylar from Heroes is the Father of the Shadows, and Peter Petrelli is the Father of the Vorlons of ''Babylon 5, after they encounter Dr. Jackson and/or O'Neil
At some point, Sylar will kill and "examine" either Daniel Jackson's or Jack O'Neill's mind, gain the Ancient knowledge, and ascend. Sylar decides to force his evolutionary theory upon the rest of the universe by creating the Shadows and "kicking over the anthills" to force the races to evolve. Peter, who at some point walked past the Stargate character that Sylar didn't kill, also ascends and tries to stop Sylar by creating the Vorlons.

Lt. Mitchell and Vala are John Crichton and Aeryn Sun on a deep undercover mission.
They managed to find a wormhole after all, and it eventually brought them back to Earth. John is interested in wormholes and their possible uses (including as doomsday weapons), so naturally he and his wife will be all over the Stargate project. They have been assigned by a deep, secretive Terran organization to monitor the SG-1 operation. Sadly, Scorpius attempted to come through the gate once to warn them of some Scarran shenanigans, but he got accidentally shunted off to the Ewoks' planet, which is why he never made a crossover to SG-1.
  • Fortunately, if Scorpius ended up on Endor after the final battle in Return of the Jedi, then... oh joy, Endor Holocaust!
    • And if before, then we can safely discout Palpatine's story about his Master's name being Darth Plagueis.
  • Well, obviously this is another Aeryn Sun who was "thrown into a blender" with Chiana, like in that unrealized reality—her personality is 90% Chiana, her physiology 90% Aeryn.
    • In addition, Farscape the series exists in the Stargate universe in the same way Wormhole Xtreme does. Someone who either viewed that reality using some Ancient technology, or someone who came from that reality, made it into a television series. That's how it was able to be referenced in "200". Of course, since this was a fictionalised version, the actors didn't look like the "real" Moya crew any more than the Wormhole Xtreme crew looked like SG-1, thereby avoiding Celebrity Paradox.

Variation: Cameron Mitchell and Vala are actually John Crichton and Aeryn Sun

  • Seeing as wornholes are a common feature in both universes they both tried to escape together but with realitiy differences the universe has to reset itself to allow them both to exist there hence they lived completely different lives from day one.

The Carters are descended from the Cartwrights of Bonanza fame.
They changed the name to try to avoid the curse. But all in all, Sam's mother was lucky to live long enough to have two kids; and that was only because her husband, being in the military, was away a lot. Carter figured it out and joined the military for that reason. Her involvement with O'Neill was a sneaky way to fast-track to head of the team, but he stubbornly kept coming back to life.

We may or may not be safe from the Great Old Ones.
Facts: Carter blew up a star. The Ori and priors have done some nasty things, too. So, there is a possibility that the stars may never be right from now on. There is the possibility that the Old Ones planned it all and needed that star destroyed to rise again...

Lexx exists because of Anubis and Oma Desala

After the other ascended beings in the diner (from the episode "Threads") witnessOma willingly sacrifice herself to distract Anubis, they create a mini-universe andseal them away forever. Anubis is forced into an insectoid body (as appears in the Lexx episode "Giga Shadow") ,cosigned to a corner of the universe where no other life exists.

Oma, in a momment of hubris, tries re-creating humanity, but they are twisted distortions whom cannot ascend. Heartbreakingly she realizes a further part of her punishment: They will never be the humans she one knew and loved. She succeeds only in creating the Brunnen-G whom she instructs to guard against Anubis/The Giga Shadow. But Anubis creates more of his kind in secret thus leading to the Insect Wars. As the last survivor,furious at his loss, has hid in an asteroid, biding his time. (As seen in the flashbacks during the first series/movies)

Oma, fatigued, uses the last of her ascended power to create a separate universe where humanity can forever be safe as Anubis/The Giga-Shadow can not enter. However, many humans decide to not follow the Brunnen-G into her universe. She is further punished by the othersis to witness the humans here are biologically compatible with Anubis's essence. Furtheringher punishment for interference she witnesses the birth of the Divine Order: An entire cultworshiping him the god he always wanted to be in the other universe/plane of existance. Furthermore,she witnesses His Divine Shadow encourage his worshipers to pervert science into the abominations we see:

1: The Divine Assasins. Humans brought back from death to serve as mindless hunters, boundto His Divine Will. (Seen in 'I Worship his Shadow')

2:The Queen, Wyst. A gruesome twist on the Goa'uld parasite (seen in "Eating Pattern")

3:The Bad Carrots. A gruesome twist on the Replicators. (seen in Season four's 'Bad Carrot')

This final onslaught, in a BreakTheHaughty move forces Oma into a HeroicBSOD Hence, she withdraws and is the reason Lexx has no real BigGood. She finally comes to understand direct interference with so-called "Lowers" is asking for tragedy of the most epic proportions.

Stan, Xev, and Kai are led as an example by the other ascended beings in how to conduct matters using no direct interference. (The is also why they let Danial in the real world getaway with 'Rescuing' Jack O'Neill)

And so, Anubis's final punishment comes to fruition: An endless cycle of time which he isbarely cognizant. One where he rules supreme over 20,000 planets but is always destroyed.

While this may seen as overly harsh, remember that the "Others", which the Ancient Ascendantbeings MAY only be a small part of, were willing to let ALL life in the Milky Way be destroyed. Alternately, the verse maybe a punishment solely for Oma or Morgan Le Fay,Possibly the entirety of the Ascended Ancients. (seeing events inside the Lexx verse butunable to help)

What? They even say that the last one is named Daniel. That could explain why he never dies. He's not coming back in a new and creative way every time. He's resurrecting!

Hammond was killed by Kira
He died of a heart attack.
  • Um, what possible reason would Kira have for killing Hammond? He kills criminals (and people who try to stop him, when he can get away with it). Hammond definitely wasn't a criminal, and would have no reason to try to stop him since it's not his jurisdiction and he's got bigger problems than a Serial Killer (i.e. keeping the entire planet from being overrun by aliens).

The aliens out of Assasin's Creed 2 are ancients
Latin sounding names and advanced technology coupled with creating humans.

Merlin created the Wizards of Waverly Place wizards
One of Merlin's early efforts to combat the Ori was to create his own version of the Priors. These were the first human wizards. Upon discovering their ability to access the Wizard World, however, they lost interest in fighting the Ori, and Merlin instead set about building his superweapon.

The wizards of Harry Potter are descended from Ancients stranded on Earth.
Think about it. Of all the pop culture references made in the Stargate-verse, Harry Potter isn't mentioned once. In the Harry Potter world, we have no idea where wizards came from; but it seems to be genetic, and the oldest era we know they existed in is... Ancient Egypt. Yes, several Stargate characters have the Ancient Gene and never went to Hogwarts, but they could be Squibs that were given to Muggle families by disgusted wizarding parents.
  • Dumbledore's body was never shown after his death because he Ascended to a Higher Plane of Existence. After Harry's temporary death in book 7, Dumbledore attempted to ascend him as well. (Compare the "celestial train station" scene in Deathly Hallows to what Daniel experienced prior to his ascension.)
  • Harry Potter Comics may embrace this idea, with members of the SGC being involved with a Christmas Eve plot of Voldemort. First seen in this comic
    • OOOO!!! Diagon Alley is out of phase!!!!!
  • Wizards and Muggles could be the second evolution's version of the Ori and the Altereans, only with the the mystical ones outranking the science-y ones this time.

The film Inception takes place in the Stargate universe
This one is actually pretty cut and dry, in Stargate Atlantis they reveal that the military has reverse engineered alien shared dreaming technology, and military research is the only origin ever given for the shared dreaming tech in Inception. In Stargate SG-1 they're even testing similar stuff with Tealc. There is nothing in Inception that would go against this.

Falling Skies is an alternate universe in Stargate
The Stargate program is responsible for bringing making the Earth known to the Overlords. "John Pope" is fully aware of this - he wasn't in prison, he was Major Paul Davis and he escaped the Stargate program and is living under a fake name. He continues to keep up the ruse because he knows the program is still operating at NORAD, trying to fix the problem.

Star Trek is Stargate's future
Both universes involve planets of humans living out in space. Both universes chalk this up to some odd prehistoric aliens.

After the end of the show, the Tau'ri pacify the Lucian Alliance and use alien tech on Earth and Earthly gumption elsewhere to bring about what amounts to a Golden Age for everyone. Then it all goes to crap in World War III. The loss of a great superpower leaves the Milky Way in a pretty bad place. Use of bioweapons on worlds with stargates leads to speciation, and those worlds bury their stargates, while worlds without stargates, who were on the outside of this trade bonanza, rise and become very powerful. The chemicals to come out of Area 51's research into tretonin leads to the first wave of narcotics the humans gave to their soldiers during this time, but this ultimately gets watered down to just drugs. Eventually, by the time the Federation is founded, the legend of the Tau'ri is held up as an example but no-one can remember where they lived.

  • I like this very much. The only issue is Star Trek: Voyager would have found it easier to get home.
    • All surviving instances of Stargate technology were stolen by the Iconians.
  • Would that would make this [ video where the Enterprise D discovers Destiny canon]?
  • In addition, widespread knowledge of at least the theory of Ascension during the downfall of civilization led to a lot of people tying it as a means of escape. Of course, not many of them got it quite right, leading to all those weirdo energy beings from TOS.
  • The only snag with this is that Star Trek: The Original Series exists in the Stargate-verse. O'Neill wanted to name the Prometheus "The Enterprise". And During "1969", while being interrogated, one of the names he gives for himself is James T. Kirk.
    • After traveling back in time, let us add! Not to mention that later in the episode, they got sent farther into the future than intended so somebody could send them back like it was no big deal. Who's to say someone else couldn't have also used time travel to make a TV show about their own recent history?
      • As an addition to the above, I'd suggest the parasites from the TNG episode "Conspiracy" may have actually been Goa'uld or at least a related lifeform. Given both the Unas and Goa'uld apparently developed on the same planet, it's possible another lifeform did. Most likely, this species shared a common evolution with the Goa'uld and then split and diverged into two distinct species. Like the Goa'uld, they greatly increased the strength and regenerative ability of the host.
      • Also, as a fun note, though not actually explained, in the episode "Haven" from the first season of TNG there was a reference that, "An incoming vessel has bypassed our stargate, violating our law." The definition on Memory Alpha (the Star Trek wikia for anyone not a fan) is "A stargate was an entryway into a star system" but I suspect that's more of a guess (a stargate was the thing they bypassed when coming into the solar system; so it must be the entryway). I personally choose to interpret this as Haven being one of the few planets left with a working stargate in the 24th century and preferring strangers to travel there by that method (perhaps from a nearby planet also with a working stargate) rather than by a ship with weapons.

Every instance of every "Groundhog Day" Loop ever caused is a result of the events of "Window of Opportunity"
Including the one actually in Groundhog Day

The Core takes place in the Stargate-verse
Among the many instances of silly science in the movie is them getting their hands on 200 megaton-yield nuclear weapons that were small enough to be movable in a compartment on the Virgil, when Tsar Bomba was at best 50 MT and bigger than an entire compartment. The solution? The SGC gave them some naquadah for extra oomph.

Daniel Jackson is a Timelord.
It's the reason he has come back from death so many times.

General Hammond is Major Briggs, having dropped the alias
The stuff in the episode "1969" happened normally, which because of his involvement got Hammond transferred to Project Blue Book, which continued in secret after its official shutdown in 1969 due to SG-1's shenanigans. That work was so secret Hammond had to create a cover story while he was working on the project, at which point he met his wife Betty and they got married. Hammond, now Brigg's work, got him and Betty moved to Twin Peaks. After the events of that show, Hammond wanted to get away from BOB and the insanity of that town, so asked for a transfer which got him back to Colorado and another alien project, once again due to his experience. At that point he was able to drop the alias, and Bobby got married and had kids. Betty still died, but to hide his work on Project Blue Book and Twin Peaks, Hammond made up a story about his marriage and lied about which was his kid and which was his stepkid.

General Hammond is an alias of (once) Captain Scully.
Agent Scully's father.He knew things he wasn't letting on, so they faked his death. There's just too much going on with the X-files and Stargate in one universe, though. Breaks my mind just thinking about it.

The series is set in an alternate version of the Bleach universe and Daniel Jackson is Aizen's reincarnation
First off, I can't take credit for this idea as I got it from a fanfic. That said, look at pre-reveal Aizen and then look at Daniel Jackson. Allowing for the differences between animation and flesh and blood, there is one hell of a resemblance, they're both incredibly intelligent, and then there's the whole 'no glasses = evilness' thing. The theory is that in an alternate timeline, Aizen either slipped up or made his move a few decades early, ended up being killed for it, and got reincarnated as Daniel. Soul Society is aware of this and a) is keeping an eye on him just in case, and b) has taken steps to ensure that that particular soul won't be returning to the afterlife anytime soon so they won't have to deal with a possible Round Two, thereby explaining Daniel's unconventional relationship with mortality/ inability to stay dead.
  • It would also explain what happened in the episode 'Absolute Power'.

Jack and Carter had a kid. His name… Jack Carter''.

Though it might seem a stretch, both Jacks have relatively similar personalities (though Jack Carter is less sarcastic, possibly softened by his mother’s influence) and have similar roles in their respective series as the character who lacks the scientific knowledge of those around them but who’s often called in to a heroic rescue or who’ll come up with the simple but effective idea the others miss. In fact the reason Jack Carter’s able to save Eureka so many times is virtually identical to the reason the Asgard recruit humanity (Sam in particular) to help fight the Replicators. We’re “dumb enough” to think in ways they can’t.

Sam and her father even have had an initially strained relationship, probably not dissimilar to what Jack Carter and Zoe (who does look a bit like Sam and has a genius level IQ like her) would have ended up with if they hadn’t bonded in Eureka. It’s not so impossible to think that Zoe Carter could be Sam Carter’s granddaughter.

This would place Eureka and Stargate in the same universe. While at first this might seem bizarre, consider the Atlantis episode “Brain Storm”. It could have easily played out as a Eureka plot. While having the theoretical details behind a dimension bridge would offer little practical application with modern real world technology, if we suppose that some of the scientists working on the project had been to Eureka then it suddenly makes it a lot more plausible that they would be able to make something practical out of it (and knowing Eureka that it would go completely wrong).

As for how it’s possible for Sam and O’Neill to be Jack Carter’s parents, he was born in 1969. While it’s tempting to try to link that to the episode of the same name, I have another theory. What if the Jack Carter’s parents were actually the Jack and Sam who were back in 3000 B.C. at the end of Moebius? They started out living out their lives there but eventually Sam got pregnant and they decided they wanted to raise their kid in the present. They found a way to travel forwards in time to 1969 (probably involving going through the Stargate and even making use of another solar flare, though maybe some alien made contact with Earth and was able to provide them stasis facilities). They may have intended to get back to their own time originally but were so happy to just end up somewhere after the invention of television and indoor plumbing that they decided 1969 was close enough.

O’Neill wanted to name his son after him but there was already a teenage Jack O’Neill running around out there (and another with one ‘l’ and no sense of humour). Plus with Sam being a bit of a feminist and naturally supporting the women’s rights movement of the time, they decided to give the kid her last name.

As an added twist, the use of the Moebius O’Neill and Carter could explain why O’Neill ended up with fish in his pond: The 3000 B.C. version of O’Neill put some there in 1969 so that they’d be there when he went fishing later in life (possibly with the intention of messing with himself when he saw the tape and realised things weren’t as they were supposed to be).

Clo'Neill's High School

To get farther away from Jack and establish himself as his own person, he transferred to a High School in a small town in Washington State. While there, he befriended a beautiful but clumsy girl, who started seeing one of the really attractive but very creepy Cullens.

Clo'Neill's High School

In much the same vein as the above, and wanting to go somewhere warm that was in striking distance of somewhere interesting, Clo'Neill headed to California. Specifically, because it wasn't that far from LA, to a town called Sunnydale...

Stargate and the Cthulhu Mythos share the same universe

Stargate and the Cthulhu Mythos all share the same universe. The Cthulhu Mythos is heavily based on Egyptian mythology, like Stargate. Nyarlathotep in particular acts like a Goa'uld. Nyarlathotep looks like an ancient Egyptian who suddenly appears suddenly in 1920, possesses knowledge of advanced technology, and whose entire modus operandi is to get more and more people under his control. Like Hathor, it is possible that Nyarlathotep was imprisoned inside his sarcophagus after the Tau'ri rebellion.

At the Mountains of Madness does seem to tie in with the Beta Gate in Antarctica. The story tells of an expedition that uncovers ancient alien artifacts (and more) in 1930. The expedition uncovers a vast complex that speaks of a highly advanced - and alien - civilization on Antarctica (the Ancient outpost perhaps?). The structure bears witness to a decline in living standards and the occupants now are horrific non-humanoid aliens that seem to be just scraping by at best. By the time SG-1 rediscovers the outpost, they are no more.

Conan the Barbarian is also part of the Cthulhu Mythos. Guess who played Conan? That’s right. Jason Momoa. The author of Conan, Robert E. Howard, specifically states that Conan takes place in the “Hyperborean Age” which begins sometime after the sinking of Atlantis. I’m sure Howard was referring to the classical Atlantis of the ancient Greeks, but it fits surprisingly well in the Stargate universe. Cimmeria could easily be a continent on Ronan’s home planet. After Atlantis sinks and the Ancients depart from the Pegasus galaxy, most of the humans on the various planets live in societies much like Conan’s.

Other relatives of Stargate characters could include Randolph Carter - the sometimes hero of the Cthulhu universe - could obviously be related to Sam in some way.

Of course, if it’s true that Stargate and the Cthulhu Mythos share the same universe, then that means Destiny is in for a rough ride. The message that the Ancients picked up from the center of the universe, the reason why they built Destiny in the first place, is Azathoth. Azathoth is the one who made the old gods and now sits in the center of the universe, eternally sleeping. Another, lesser god is there with him, constantly playing music (the message Destiny picks up) for if he awakes then the universe will be destroyed.

Jack O'Neill is the Avatar
And the Season 7 Finale happened during the Harmonic Convergence (Anubis was Vaatu).
  • Also the SG-1 is the actual Avatar Team.

The movie Dark Star takes place in the Star Gate SG 1 future
Dark Star takes place in the 22nd Century.
  • The eponymous starship Dark Star has the registration "ADC 2238-5531." That's USAF (United States Air Force) nomenclature. ADC for a (reactivated) version of the USAF Air Defense Command (1946-1950, 1951-1968) or Aerospace Defense Command (1968-1980). Both of the Cheyenne Mountain Complex.
  • The starship Dark Star uses hyperdrive for FTL travel.
  • The crew of the Dark Star receives transmissions from a USAF base or a USAF controller based in Antartica. The crew are U.S. Air Force.
  • Their container sized Thermosteller device is capable of vaporizing a planet. The 22nd Century version of a Naquadah bomb on steroids?


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