Editing Spaceship (section)

===Spacecraft in [[Warhammer 40,000]]===
Unlike most other sci-fi spacecraft, [[Imperium of Man|Imperial]] ships in the WH40K universe have some special requirements. Instead of traveling faster than the speed of light, they enter an alternate dimension known as the [[Warp]] where the laws of physics are altered, and serves as the basis for most FTL travel in the setting. Because the Warp is basically hell and is full of [[daemon]]s that want to eat your soul, ships also carry Gellar Field generators to keep the ship safe inside a bubble of realspace. The liberal use of religious iconography also helps to ward off unwelcome visitors. In addition, Imperial ships make use of a [[Navigator]], a special strain of mutant that uses his psychic abilities to locate the [[Astronomicon]] found on Earth, and use its location to plot a course to their destination.

All that being said, the Warp is still quite treacherous and unpredictable, and a single accident can cause a ship to become irrevocably lost. Sometimes however, a ship returns to realspace as part of a [[Space Hulk]], which can house all manner of nasty threats to nearby planets. Other factions thus sometimes use slower but more reliable means of travel, such as the Ether Drives of the [[Tau]] which merely dip into the Warp. A phenomenon called “Warp Storms” can make large swaths of space closed off to space travel, as the storm creates an impassable barrier (generally speaking; sometimes a route through the storm may exist such as the [[Cadia|Cadian Gate]], making it a frequent target for chaos attacks). The most famous example is the [[Eye of Terror]].

For other means of travel that do not rely on the Warp, when they don't use [[Dolmen Gate|Dolmen Gates]], [[Necron]] ships use Inertialess Drives which removes all inertia from a ship. The [[Tyranid]] don't make use of the Warp at all to travel, though their ships are not individually capable of FTL. Instead, they have a specialized bio-ship called a [[Narvhal]], which senses distant systems and warps spacetime to create tunnels toward them for their fleets, similar to a wormhole. The tunnels break down in the presence of strong gravity wells, however, forcing the fleet to slow down as they approach their target and reach planets through more conventional means.