Or just move at speeds in general. Pilots get effected as they fly and I know if we had the technology then I probably wouldn't be asking. I want to know if it is possible theoretically?
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Yes it is possible if you fly at a specific speed in a controlled enviroment :)
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Look up the KC-135 Vomit Comet. It's used to train NASA astronauts. It flies in a particular parabolic path so that for several minutes at a time the occupants experience weightlessness.