• mossy_@lemmy.world
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    11 months ago

    You’re on to something, I suppose, but the conservation of momentum does allow for travel in a vacuum. The matter ejected by the thruster pushes against the rocket.

    • StormWalker@lemmy.zip
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      11 months ago

      It could be tested to a degree with a vacuum chamber here on earth. Put a little rocket inside horizontally and see if it moves when fired in a partial vacuum.

    • StormWalker@lemmy.zip
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      11 months ago

      Yes I agree with you in that it would have the undisturbed momentum from pushing off from earth. But no way to slow down, or change course. I’m not sure mater ejected could push back. Surly the vacuum of space would just suck the rocket or thruster empty as fast as possible. . It just bugs me. Lol