History Main / UnrealisticBlackHole

7th Jan '17 11:40:34 PM sinndogg
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*** Black holes may not be luminous, but the accretion discs that tend to orbit them (like the one in the movie) are. Black hole accretion discs tend to give off lethal amounts of gamma and hard X-ray radiation though, so any planets orbiting their host black holes would be completely uninhabitable.

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*** Black holes may not be luminous, but the accretion discs that tend to orbit them (like the one in the movie) are. Black hole accretion discs tend to give off lethal amounts of gamma and hard X-ray radiation though, so any planets orbiting their host black holes them would be completely uninhabitable.sterilised.
7th Jan '17 11:35:51 PM sinndogg
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*** Accretion disc around black holes ''do'', however, tend to give off radiation. Planets around them would still be uninhabitable though, since radiation would include lots of gamma and hard X-rays.

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*** Accretion disc around black Black holes ''do'', however, may not be luminous, but the accretion discs that tend to orbit them (like the one in the movie) are. Black hole accretion discs tend to give off radiation. Planets around them would still be uninhabitable though, since radiation would include lots lethal amounts of gamma and hard X-rays.X-ray radiation though, so any planets orbiting their host black holes would be completely uninhabitable.
7th Jan '17 11:28:09 PM sinndogg
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*** Accretion disc around black holes ''do'', however, tend to give off radiation. Planets around them would still be uninhabitable though, since radiation would include lots of gamma and hard X-rays.
17th Dec '16 5:32:24 PM StarSword
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** In "A Matter of Time," the Stargate connects to a planet falling into a black hole; the fact that time slows down near a black hole is used both as a plot point and for dramatic effect. The heroes must watch an unfortunate SG team on the doomed planet try to reach the gate they keep running, but can never reach safety, as time slows to a crawl for them, and the 38 minutes the gate can stay open passes in under a second. Carter also briefly nods toward real-life physics in that the time dilation effect is affecting a wider area than the black hole's gravity is, which is completely nonsensical (the time dilation and increased gravity are ''the same thing'', you can't have one without the other), and she basically shrugs and admits "I have no idea how that's happening".

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** In "A Matter of Time," the Stargate connects to a planet falling into a black hole; the fact that time slows down near a black hole is used both as a plot point and for dramatic effect. The heroes must watch an unfortunate SG team on the doomed planet try to reach the gate they keep running, but can never reach safety, as time slows to a crawl for them, and the 38 minutes the gate can stay open passes in under only a second.few seconds from Stargate Command's perspective, barely long enough to get their badly redshifted authentication signal through. Carter also briefly nods toward real-life physics in that the time dilation effect is affecting a wider area than the black hole's gravity is, which is completely nonsensical (the time dilation and increased gravity are ''the same thing'', you can't have one without the other), and she basically shrugs and admits "I have no idea how that's happening".
17th Dec '16 5:25:48 PM StarSword
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[[folder:Fan Works]]
* Actually averted in the ''VideoGame/StarTrekOnline'' fanfic "Fanfic/AChangedWorld", which uses the gravitational redshifting and TimeDilation surrounding a black hole as plot points: a Bajoran starship [[spoiler:and a Klingon battlecruiser]] are dragged 139 years into the future due to proximity to one, and the DistressSignal is distorted so badly by the black hole that it took that long for it to be detected by any passing ships. The stated mass and physical size of the black hole are also realistic.
[[/folder]]
6th Dec '16 2:44:09 PM ElSquibbonator
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** There's also the issue of the fact that a habitable planet is orbiting close to the black hole, and receiving radiation from it just as Earth does from the sun. In real life, if a planet were orbiting that close to a black hole (especially a supermassive one like in the movie) it would be torn apart by tidal forces. Even if it survived, it would not be habitable because black holes do not give off radiation.
30th Nov '16 12:15:16 PM normal19
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[[PowerOfTheVoid Black holes]]. They're the most terrifying things in the known universe. They're huge masses of... well, ''nothing'' (but they do have a lot of [[ShapedLikeItself mass]]); and nothing, not even light, can travel fast enough to escape them. Unfortunate items which do fall in are spaghettified (the official scientific term), stretched thin by [[http://en.wikipedia.org/wiki/Tidal_force tidal forces]], the black hole ripping atom from atom, then [[DeaderThanDead ripping up the atoms]]. But that's only if you get too close. From a far enough, stable orbit, being near a black hole would just be the same as orbiting a massive star, only ''much'' more massive.[[note]]Often as far across in diameter as Neptune's orbit.[[/note]] [[StealthInSpace That's invisible.]] [[ShadowDiscretionShot Except as a silhouette against the stars.]] [[note]]The gravitational lensing effect is hard to overlook - see the Other Wiki for a simulation thereof.[[/note]]

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[[PowerOfTheVoid Black holes]]. They're the most terrifying things in the known universe. They're huge masses of... well, ''nothing'' (but they do have a lot of [[ShapedLikeItself mass]]); and nothing, not even light, can travel fast enough to escape them. Unfortunate items which do fall in are spaghettified [[https://en.wikipedia.org/wiki/Spaghettification spaghettified]] (the official scientific term), stretched thin by [[http://en.wikipedia.org/wiki/Tidal_force tidal forces]], the black hole ripping atom from atom, then [[DeaderThanDead ripping up the atoms]]. But that's only if you get too close. From a far enough, stable orbit, being near a black hole would just be the same as orbiting a massive star, only ''much'' more massive.[[note]]Often as far across in diameter as Neptune's orbit.[[/note]] [[StealthInSpace That's invisible.]] [[ShadowDiscretionShot Except as a silhouette against the stars.]] [[note]]The gravitational lensing effect is hard to overlook - see the Other Wiki for a simulation thereof.[[/note]]
13th Nov '16 4:37:26 PM nombretomado
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* One episode of ''JusticeLeagueUnlimited'' had a scientist who grew a black hole in his stomach. By the end of the episode, Booster Gold is able to release everything that had been sucked in, completely unharmed.

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* One episode of ''JusticeLeagueUnlimited'' ''WesternAnimation/JusticeLeagueUnlimited'' had a scientist who grew a black hole in his stomach. By the end of the episode, Booster Gold is able to release everything that had been sucked in, completely unharmed.
30th Oct '16 4:48:04 PM nombretomado
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* The power of the main villain in Franchise/{{LEGO}}'s ''Franchise/HeroFactory'' is creating black holes, using a staff. As if the writer was aiming to play this trope straight as best as she could, they are actual holes you can jump into, and... cling onto their inner "walls". Even though the wall was intangible and characters simply floated through them [[FridgeLogic in the previous scene]]. Their sucking power is so immense, they pull the weapons out of the Heroes' hands, but inside, you can freely jump around from wall to wall without falling deeper into it. Another interesting thing is that if you jump upwards into it, you end up on its wall, but if you climb out of it upwards, you will fall out downwards through its "bottom". How can these black holes be neutralized? By throwing anti-gravity flying devices into them.

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* The power of the main villain in Franchise/{{LEGO}}'s ''Franchise/HeroFactory'' ''Toys/HeroFactory'' is creating black holes, using a staff. As if the writer was aiming to play this trope straight as best as she could, they are actual holes you can jump into, and... cling onto their inner "walls". Even though the wall was intangible and characters simply floated through them [[FridgeLogic in the previous scene]]. Their sucking power is so immense, they pull the weapons out of the Heroes' hands, but inside, you can freely jump around from wall to wall without falling deeper into it. Another interesting thing is that if you jump upwards into it, you end up on its wall, but if you climb out of it upwards, you will fall out downwards through its "bottom". How can these black holes be neutralized? By throwing anti-gravity flying devices into them.
26th Oct '16 2:23:22 PM AgProv
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* The Music/BlueOysterCult song ''Heavy Metal (Black and Silver)'' was inspired by a popular science work about the idea that black holes could be used as a means of faster-than-light travel. Inevitably it simplifies the science and takes liberties.
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