thumb|right|Artist's conception of a warp drive design In science fiction, space ships use various means to travel, some of them scientifically plausible (like solar sails or ramjets), others, mostly or entirely fictitious (like anti-gravity, warp drive, spindizzy or hyperspace travel).
thumb|right|Artist's conception of a warp drive design In science fiction space ships use various means to travel, some of them scientifically plausible (like solar sails or ramjets) others, mostly or entirely fictitious (like anti-gravity, warp drive, spindizzy or hyperspace travel).