History Main / SubSpaceAnsible

10th Jul '16 6:02:06 PM ChronoLegion
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* Inexplicably possible in the Soviet two-part sci-fi film ''Film/MoscowCassiopeia'', where the teen cosmonauts are able to attend classes via teleconference while in interstellar space. Later, when they end up traveling at near-light speeds and end up at their destination early (from their viewpoint), they talk to mission control back on Earth in real-time. There is also the moment where [[MenInBlack IOO]] uses a rotary pay phone and a metal cigar case to show real-time footage of the starship to TheCaptain's parents, but his abilities appear to be far beyond what's possible even in the film's science.
10th Jul '16 4:30:05 PM ChronoLegion
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* In ''Literature/ArrivalsFromTheDark'', humanity learns to do this at the same time as they get FTL drives, sending instantaneous messages through [[SubspaceOrHyperspace Limbo]]. It's expensive and requires a lot of power, so the SpaceNavy mostly relies on couriers and FTL drones (they tend to be one-shot, since small FTL drives burn out after one use). In later novels, real-time video communication is possible across many parsecs. With the [[HumanAliens Faata]], while they have radio communication equipment, it's only used to communicate with the primitive races they're about to conquer, while they themselves rely on PsychicPowers for communication among themselves. Powerful bio-computers are able to communicate across light years using psychic waves, but even they can't reach across the Void between galactic arms.
10th Jul '16 1:54:28 PM FGHIK
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** However, when the plot required it in [[Series/StarTrekTheOriginalSeries the Original Series]], they'd make mention that their messages would take several days to reach a Star Base.

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** However, [[TravelingAtTheSpeedOfPlot when the plot required it it]] in [[Series/StarTrekTheOriginalSeries the Original Series]], they'd make mention that their messages would take several days to reach a Star Base.
5th Jul '16 7:39:45 PM TheNicestGuy
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[[folder:Western Animation]]
* In the episode "All This and Gargantua-2" of ''WesternAnimation/TheVentureBrothers'', there is a "conversation" between Sgt. Hatred on Earth and Dr. Venture on an orbiting space station. In a subversion of ContinuityEditing, lines are weirdly repeated, and they talk over each other.
-->'''Sgt. Hatred:''' Doc, I am calling from ''Earth''. There's like a huge delay; will you just wait for it?
[[/folder]]
9th Jun '16 9:03:16 AM Morgenthaler
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* The CoDominium universe and ''Literature/TheMoteInGodsEye'' by Larry Niven and Jerry Pournelle.

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* The CoDominium Literature/CoDominium universe and ''Literature/TheMoteInGodsEye'' by Larry Niven and Jerry Pournelle.



* LoisMcMasterBujold's [[Literature/VorkosiganSaga Miles Vorkosigan]] novels use wormholes as shortcuts through space; unfortunately, there's no way to send messages through a wormhole without recording them and putting them on a ship. High traffic routes have regular courier ships shuttling the mail back and forth through the wormholes. On low traffic routes, your mail may sit for weeks for someone to come along and carry it on. Once on the other side, a message may be beamed at the speed of light to the next wormhole (if there's a permanent station there) or it may be carried on a ship the whole way.

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* LoisMcMasterBujold's Creator/LoisMcMasterBujold's [[Literature/VorkosiganSaga Miles Vorkosigan]] novels use wormholes as shortcuts through space; unfortunately, there's no way to send messages through a wormhole without recording them and putting them on a ship. High traffic routes have regular courier ships shuttling the mail back and forth through the wormholes. On low traffic routes, your mail may sit for weeks for someone to come along and carry it on. Once on the other side, a message may be beamed at the speed of light to the next wormhole (if there's a permanent station there) or it may be carried on a ship the whole way.



* Averted in Creator/CJCherryh's Literature/AllianceUnion and ChanurSaga series. Communications between star systems can only be done via FTL courier, and FTL travel is only possible between the outside edges of star systems. When a space ship arrives at the edge of a system and travels inwards it takes a long time for light-speed messages to reach the inner system (or vice-versa), with the time shortening as the ship hurtles forward at a considerable fraction of the speed of light.

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* Averted in Creator/CJCherryh's Literature/AllianceUnion and ChanurSaga Literature/ChanurSaga series. Communications between star systems can only be done via FTL courier, and FTL travel is only possible between the outside edges of star systems. When a space ship arrives at the edge of a system and travels inwards it takes a long time for light-speed messages to reach the inner system (or vice-versa), with the time shortening as the ship hurtles forward at a considerable fraction of the speed of light.
8th Jun '16 11:28:53 AM Morgenthaler
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* In Peter F. Hamilton's ''NightsDawnTrilogy'', it is possible that certain alien races have developed FTL communications, but humans certainly have not. Information is couriered around by manned starships.

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* In Peter F. Hamilton's ''NightsDawnTrilogy'', ''Literature/NightsDawnTrilogy'', it is possible that certain alien races have developed FTL communications, but humans certainly have not. Information is couriered around by manned starships.
7th Jun '16 3:38:13 PM UmbrellasWereAwesome
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* Communication across large distances is virtually impossible in the ''Anime/SuperDimensionFortressMacross'' universe; it is actually a plot point in ''Anime/MacrossFrontier'', where even relay buoys must contend with "fold interference" that delay or disable communication entirely. However, the [[NeglectfulPrecursors Protoculture]] and the Vajra have their ways around that (see above.)
** This actually seems to be a retcon. Earlier series had more or less instant FTL communication across the galaxy to the point that various fighter and ship designs were completely standard thanks to simply downloading them via a galaxy spanning internet. It was also specifically stated in Macross 7 for instance that the issue wasn't that no one knew what was going on, but that even with a call for aid it would take months at best for anyone else to arrive to reinforce the colony. The sudden addition of all these range limits and interference and such in Frontier really came out of nowhere seemingly driven entirely by rule of drama.

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* Communication across large distances is virtually impossible in the ''Anime/SuperDimensionFortressMacross'' ''Anime/{{Macross}}'' universe; it is actually a plot point in ''Anime/MacrossFrontier'', where even relay buoys must contend with "fold interference" that delay or disable communication entirely. However, the [[NeglectfulPrecursors Protoculture]] and the Vajra have their ways around that (see above.)
above).
** This actually seems to be a retcon. Earlier series had more or less instant FTL communication across the galaxy to the point that various fighter and ship designs were completely standard thanks to simply downloading them via a galaxy spanning internet. It was also specifically stated in Macross 7 for instance ''Anime/{{Macross 7}}'' that the issue wasn't that no one knew what was going on, but that even with a call for aid it would take months at best for anyone else to arrive to reinforce the colony. The sudden addition of all these range limits and interference and such in Frontier ''Frontier'' really came out of nowhere seemingly driven entirely by rule of drama.
28th May '16 12:33:54 AM Doug86
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** Humans the the [[PlanetLooters Zuul]] actually use regular radios to send and receive messages. They just leave relay buoys near [[SubspaceOrHyperspace node space]] points that re-transmit the messages through to the other side. Given this AllInTheManual description, this method is far from instantaneous.

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** Humans the the [[PlanetLooters Zuul]] actually use regular radios to send and receive messages. They just leave relay buoys near [[SubspaceOrHyperspace node space]] points that re-transmit the messages through to the other side. Given this AllInTheManual AllThereInTheManual description, this method is far from instantaneous.
19th May '16 6:26:58 AM Morgenthaler
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* The CoDominium universe and ''TheMoteInGodsEye'' by Larry Niven and Jerry Pournelle.

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* The CoDominium universe and ''TheMoteInGodsEye'' ''Literature/TheMoteInGodsEye'' by Larry Niven and Jerry Pournelle.
18th May '16 2:49:02 AM PaulA
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* In ''Hellspark'' by Creator/JanetKagan, there is FTL travel but no FTL communication. Messages have to be physically transported, and there are severe penalties for interfering with a ship carrying mail. Expeditions planning to spend time away from the regularly-travelled routes may take unmanned message drones, but these are expensive and hard to replace, and are kept in reserve for emergencies.

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* In ''Hellspark'' ''Literature/{{Hellspark}}'' by Creator/JanetKagan, there is FTL travel but no FTL communication. Messages have to be physically transported, and there are severe penalties for interfering with a ship carrying mail. Expeditions planning to spend time away from the regularly-travelled routes may take unmanned message drones, but these are expensive and hard to replace, and are kept in reserve for emergencies.
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