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Editing Gravity in the Re-imagined Series

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{{RDM science series}}
{{RDM science series}}


:''Much of the information on this page was derived from the Wikipedia article on [[w:Artificial gravity|artificial gravity]].''
''(Much of this topic is derived from information in an article on the subject on [[Wikipedia:Artificial gravity|Wikipedia]]. Not all of ''Battlestar Wiki's''  contributors are rocket scientists.)''


[[File:Synthgravity1.jpg|right|thumb|Throwaway graphics in the upper right corner of this computer display shows terms relating to the artificial gravity in a [[Raptor]].]]
Of course, it's very practical for humans, who evolved in '''gravity''', to have it aboard their ships.
While the use of artificial gravity in the [[Battlestar Galactica (RDM)|Re-imagined Series]] is obvious, there are only two explicit references. One is from the few close-ups of [[Computers in the Re-imagined Series|computer]] displays, where the terms "gravity control" and "synthetic gravity" are shown (upper right corner of the picture to the right). The second is [[Margaret Edmondson]] mentioning that the "grav field" is deactivated when she boards a drifting Raptor in the episode "[[Sine Qua Non]]."


Real-world scientific theories present several potential means of simulating or producing gravitational effects:
Cinematically, it also makes it much easier for The Powers that Be to keep production costs down by not having to simulate weightlessness in the [[Re-imagined Series]].
 
That doesn't mean we can let the [[Colonial Fleet (RDM)|Colonial Fleet]] get away with just having artificial gravity without some explanation, especially given [[Ronald D. Moore|Ron D. Moore]]'s [[Naturalistic science fiction|realistic science fiction]] principles of his show. From a science fiction perspective, this has always been the hardest "technology" to explain away in a show. Most shows don't even bother unless the temporary loss of artificial gravity would make a good plot complication.
 
[[Image:Synthgravity1.jpg|right|thumb|Throwaway graphics in the upper right corner of this computer display shows terms relating to the artificial gravity in a [[Raptor]].]]
So far, the only information acknowledging the use of artificial gravity in the series comes from a few close-ups of [[Computers|computer]] displays, where the terms "Gravity control" and "synthetic gravity" are shown (look to the upper right of the picture shown).
 
From what our scientists have theorized here on the real-world Earth, you can generate gravity from several ideas:


* ''Rotation of the spacecraft'' to generate centrifugal forces within a spacecraft.
* ''Rotation of the spacecraft'' to generate centrifugal forces within a spacecraft.
:This motion would push objects and people in the ship outward, so the outside skin of the ship would act as the "floor." This was done in the movie ''2001: A Space Odyssey'' (the crew compartment inside the ''Discovery'' spun) and the TV show ''[[w:Babylon 5|Babylon 5]]'' (the cylindrical space station spun on its longitudinal axis). One of the [[The Fleet (RDM)|Fleet]]'s ships in fact sometimes uses this form of artificial gravity: the ''[[Space Park]]''. Viewers can get a good view of this ship in motion when the Fleet leaves [[Ragnar Anchorage]] in the Miniseries. It's specified that the ship's design dates from a period when centrifugal force was the main artificial-gravity solution in place, before whatever current technology is in use came into widespread use.
:Remember the playground merry-go-rounds of your youth? Same principle. In fact, one of the [[The Fleet (RDM)|Fleet]]'s ships uses this form of artificial gravity when it feels like it: the [[Space Park]]. Viewers can get a good view of this ship in motion when the Fleet leaves [[Ragnar Anchorage]] in the Miniseries.
 
* ''Keeping the ship at constant acceleration'', with the crew standing in the opposite direction of acceleration.  
* ''Keeping the ship at constant acceleration'', with the crew standing in the opposite direction of acceleration.  
:Same principle that every astronaut experiences as their rocket launches into space and accelerates. This of course means that the ship must get progressively faster for eternity; stabilizing speed would lead to weightlessness, and stopping the ship would send everyone crashing into the ceiling.
:Same principle that every astronaut experiences as their rocket launches into space and accelerates. In this principle, you won't take your hands off the throttle, keeping the ship's engines on at all times.
 
* ''Place something with a lot of mass'' within your ship.
* ''Place something with a lot of mass'' within your ship.
:This isn't artificial gravity, but the real thing. But there is the matter of the energies required to move your ship, the large gravity well that wants to attract other objects into your ship's general direction, and the shape of your ship. Gravity just '''works''', pulling from every direction, so you would need a round ship to keep from strange changes in gravity aboard a ship. Worst of all, the amount of fuel needed to move a ship with a local mass concentration would be very high.
:This isn't artificial gravity, but the real thing. But there is the matter of the energies required to move your ship, the large gravity well that wants to attract other objects into your ship's general direction, and the shape of your ship. Gravity just '''works''', pulling from every direction, so you would need a round ship to keep from strange changes in gravity aboard a ship. Worst of all, the amount of fuel needed to move a ship with a local mass concentration would be really, really high.
 
* ''Use tidal forces''.
* ''Use tidal forces''.
:Stretch a tether with a small mass between a large gravity source and the ship you want. Cheap, fuel-free, and reliable. There's the matter of actually being able to travel somewhere besides planetary orbit without losing gravity, however.  Several ships from the science-fiction role-playing game series ''[[w:Xenosaga|Xenosaga]],'' particularly the vessels ''Durandal'' and ''Dämmerung'', appear to use a concept similar to this with masses rotating around the ship in a controlled orbit maintained by forcefields.
:Stretch a tether with a small mass between a large gravity source and the ship you want. Cheap, fuel-free, and reliable. There's the matter of actually being able to travel somewhere besides planetary orbit without losing gravity, however.
 
* ''Fake gravity by using another classic force, magnetism''.
* ''Use magnetism''.
:The big term for this is [[Wikipedia:Diamagnetism|diamagnetism]], or, more specificially for this application, ''diamagnetic levitation''. Based on the technologies we've seen in the Re-imagined Series (such as their use of magnetism for landing and launching Vipers)<ref name="vipers">In the [[Miniseries]], viewers see a preflight checkout and launch of the fighters. For launch, the [[Launch tubes|launch tube]] uses a magnetic catapult ("magcat") to hurl the Viper out. On landing, either magnetism or some blend of artificial gravity pulls Vipers to rest on the deck of the [[Flight pod|flight pod]]. This force appears to be just strong enough; note the bouncing that the fighters do as their landing skids hit the landing deck while they retreat to ''Galactica'' as it prepares to Jump from Ragnar Anchorage at the conclusion of the Miniseries.</ref>, this principle has the most viability, but it also fraught with huge problems in application.
:The term for this is [[w:Diamagnetism|diamagnetism]]. Based on the technologies we've seen in the Re-imagined Series (such as their use of magnetism for landing and launching Vipers)<ref name="vipers">In the [[Miniseries]], a preflight checkout and launch of the fighters can be seen. For launch, the [[Launch tubes (RDM)|launch tubes]] use a magnetic catapult ("magcat") to hurl the Vipers out. On landing, either magnetism or some blend of artificial gravity pulls Vipers to rest on the deck of the [[flight pod]]. This force appears to be just strong enough; note the bouncing that the fighters do as their landing skids hit the landing deck while they retreat to ''Galactica'' as it prepares to jump from Ragnar Anchorage at the conclusion of the Miniseries.</ref>, this principle has the most viability, but is also fraught with huge problems in application.
:''Everything'' has a magnetic attraction, but most objects (a human body included) has so little magnetism that we don't really think about it. This principle could be used to force ''everything'' in a particular direction. But, first off, using magnets together usually makes objects ''float'' between them, not drop, so you have to figure out how to angle things for the proper effect<ref>Scientists here on Earth have actually [http://www.hfml.science.ru.nl/levitate.html levitated a frog at a force of 1''g'' ] (Earth's gravity), but it took a massive amount of cryogenically frozen hardware to do it, and that was using the magnet to push ''away'' from Earth's gravity, not push the object ''down''.</ref>. However, high magnetic field concentrations [http://star-www.st-and.ac.uk/~jrs/safety/magnetic.html are probably not very healthy]] in the long term.
:''Everything'' has a magnetic attraction, but most objects (a human body included) have very little of it. Diamagnetism at the present time has mostly been used to ''repel'' two objects, i.e. to levitate one of them, instead of to attract them, as gravity would.<ref>Scientists on Earth have actually [http://www.hfml.science.ru.nl/levitate.html levitated a frog at a force of 1''g'' ] (Earth's gravity), but it took a massive amount of cryogenically frozen hardware to do it, and that was using the magnet to push ''away'' from Earth's gravity, not push the object ''down''.</ref>. Also, high magnetic field concentrations are probably not very healthy in the long term.<ref>http://star-www.st-and.ac.uk/~jrs/safety/magnetic.html</ref>


However, these methods, although proven in practice or at least mathematically, are not likely to be the solution implemented in the series. Other possibilities do exist that could more completely match the solutions used in the show, but are based less in current scientific understanding and more on imaginary technology, including:
If the writers have to dive back into the old fictionalized bag of tricks, you could consider these fanciful notions for keeping your deck crews on the deck:


* Use ''gravitomagnetism''.
* ''Use rotational gravity.''
: Artificial gravity, or cancellation of gravity, is sometimes present in spacecraft that are neither rotating nor accelerating. At present, there is no confirmed technique that can produce gravity other than sheer mass. There have been many claims over the years of such a device. Eugene Podkletnov, a Russian engineer, has claimed since the early 1990s to have made such a device consisting of a spinning superconductor producing a powerful gravitomagnetic field, but there has been no verification or even negative results from third parties. In 2006, a research group funded by ESA claimed to have created a similar device that demonstrated positive results for the production of gravitomagnetism, although it produced only 100 millionths of a g[http://www.esa.int/SPECIALS/GSP/SEM0L6OVGJE_0.html].
:This variation of centrifugal gravity generation has been done in the movie ''2001: A Space Odyssey'' (the crew compartment inside the ''Discovery'' spun) and the venerable TV show "[[Wikipedia:Babylon 5|Babylon 5]]" (the cylindrical space station spun on its longitudinal axis).


* ''Simulate gravity with force fields.''
* ''Simulate gravity with force fields.''
:The eponymous spaceship in the TV show ''[[w:Andromeda (TV series)|Andromeda]]'' uses "gravity generators." The ''Star Trek'' universe has a [[MemoryAlpha:Artificial gravity|similar concept]]. This has no context in the realistic SF ethos and no basis in scientific plausibilty at present.
:The central spaceship in the TV show "[[Wikipedia:Andromeda|Andromeda]]" uses "gravity generators". The "Star Trek" saga has a similar idea. This concept seems also to be a slap in the face of realistic SF concepts since it's a completely fanciful concept with no basis in scientific plausibilty at present.


* ''Spacetime manipulation.''
* ''Spacetime manipulation.''
:The ability to do [[FTL|Faster Than Light travel]] indicates the Colonials have the advanced technology to manipulate spacetime. The same principles that enable this technology could be used to create gravitational effects on Colonial ships. While such technology is currently as far-flung as the aforementioned force fields and FTL drives, the concept may be arguably the most plausible as the actual solution as its correlation to FTL in the series has roots in [[w:General Relativity|general relativity]].
:The ability to do [[FTL|Faster Than Light travel]] indicates the Colonials have the advanced technology to manipulate the fabric of spacetime. This same ability might be harnessed to provide artificial gravitation. However, the connection between the use of ''Galactica's'' FTL drives (which are inactive until "spun up") makes this idea inconsistent with story elements where the FTL drives must be prepped before using. Also, this idea is also fanciful in its basis in known scientific fact or theory.


So far the concept of artificial gravity in the show has yet to be explained; As much about gravity is still unknown, however, this would be in keeping with the show's [[Naturalistic science fiction|naturalistic sci-fi]] aesthetic.
So, there are no definitive answers to the issue of what comes up and must come down in ''Battlestar'', and the concept of artificial gravity in the show has yet to be explained anytime soon by the writers. Maybe a Raptor will lose their gravity on a mission one day in an episode, and the writers will have to have the characters [[Frak|curse]] about the issue.


===What about the flight pods on ''[[Pegasus (RDM)|Pegasus]]''?===
===What about the flight pods on ''[[Pegasus (RDM)|Pegasus]]''?===


Unlike ''Galactica'''s, each flight pod on the advanced battlestar ''Pegasus'' are divided along its length into two landing bays. In "[[The Captain's Hand]]," Vipers are flying inverted (relative to the battlestar) and land in the bays "upside down." Is artificial gravity to be credited with this?
Unlike ''Galactica's'', each flight pod on the advanced battlestar ''Pegasus'' are divided along its length into two landing bays. In "[[The Captain's Hand]]," viewers see Vipers inverting (relative to the battlestar) and landing on the bays "upside down." Is artificial gravity to be credited with this?


The answer is more likely magnetism. Vipers are launched with a magnetic catapult, and (as seen in "[[The Hand of God (RDM)|The Hand of God]]") can magnetically mate using their landing skids to a metal surface (in this case, the interior of a freighter). Like gravity, magnetism works in any direction, and takes little to maintain. Confirming this idea is a scene from the [[Miniseries]]. As ''[[Colonial Heavy 798]]'' lands in ''Galactica'''s port flight pod to offload passengers for the decommissioning ceremony, two spacesuited figures are working on the deck. The two crewmembers are floating, suggesting that artificial gravity is ''not'' in use. Reinforcing this are the [[combat landing]]s done by Vipers. The fighters bounce very noticeably at high speeds but, unlike a rock skipping across a pond, the Viper bounces less ballistically, suggesting that a weaker force than normal gravity is at work.  How the Vipers get from the upside-down flight deck to the right-side-up [[hangar deck]], however, is unknown.
The answer is more likely magnetism. Vipers are launched with a magnetic catapult, and (as seen in "[[The Hand of God]]") can magnetically mate using their landing skids to a metal surface (in this case, the interior of a freighter). Like gravity, magnetism works in any direction, and takes little to maintain. Confirming this idea is a scene from the [[miniseries]]. As ''[[Colonial Heavy 798]]'' lands in ''Galactica's'' port flight pod to offload passengers for the decommissioning ceremony, we see two spacesuited figures working on the deck. The two crewmembers are floating, suggesting that artificial gravity is ''not'' in use. Reinforcing this are the [[Combat landing|combat landings]] done by Vipers. The fighters bounce very noticeably at high speeds but, unlike a rock skipping across a pond, the Viper bounces less ballistically, suggesting that magnetism, a weaker force than gravity, is at work.  How the Vipers get from the upside-down flight deck to the right-side-up [[hangar deck]], however, has yet to be seen.
* However, in the fourth season it was shown multiple times that at least part of the flight decks on both ships have artificial gravity that humans can walk on. Humans can be seen on the flight decks very explicitly in "[[Blood on the Scales]]'' and if you look closely, in "[[Razor]]" as well. Presumably gravity on the flight decks would make it easier to operate the various maintenance vehicles both ships have as well.


==References==
==References==
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