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Message: <blockquote data-quote="Griffmonkez" data-source="post: 2652301" data-attributes="member: 897592"><p>I don't understand  why people would think that you would need to use thrusters in empty space when since there isn't any friction if there is any in space? So wouldn't they just be propelled by their own kinetic energy? The only reason I would use thrusters is to stop, turn, or pull it out of the gravity of a large object? so why do people think they'll need to continually use their thrusters and fuel in space travel?</p></blockquote><p></p>