Warp drive theory

theoretical superluminal propulsion system in many science fiction works, most notably Star Trek

thumb|330x330px|Because the sphere travels faster than light, the observer sees nothing until it has already passed. Then, two images appear: one of the sphere arriving (on the right) and one of it departing (on the left). Faster-than-light (superluminal or supercausal) travel and communication are the conjectural propagation of matter or information faster than the speed of light in vacuum (). The special theory of relativity implies that only particles with zero rest mass (i.e., photons) may travel at the speed of light, and that nothing may travel faster.

hypothetical mode of transportation by warping space

unusual or hypothetical physical substance or state

hypothetical type of exotic matter whose mass is of opposite sign to the mass of normal matter

speculative mechanism for space travel involving the warping of spacetime into permanent superluminal tunnels