*No time travel *No faster-than-light (FTL) travel or wormhole travel; no "warp speed" or "hyperspace" *No teleportation *No space travel without propellant (and a large enough vessel in which to store it) or without solar or magnetic sails *No walnut-sized nuclear reactors *Unknown elements or compounds cannot be introduced to fuel spacecraft or high-energy processes *No gravity, anti-gravity, levitation, or anti-acceleration machines (a.k.a. "inertial dampening") *No space maneuvers based on aerial dogfight mechanics *No egregious violations of conservation of energy or egregious uses of energy *No personal flying cars under complete operator control *No ESP, telekinesis, or fortune-telling *No force shields, light sabers, or laser beams
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The Martian
A Novel
eBook - 2014
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