Can we swim forward in space with wide enough arms or wings attached in vacuum?
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Newton’s 3rd Law is going to stop you here. When you swim in a pool, you push against the water in the pool to drive yourself forward. In space there is nothing to push against so you won’t have any translational acceleration; that’s a fancy way to say your center of gravity won’t be affected.
You might be able to get some kind of rotational acceleration by waving your limbs tucking them into your body but your center of gravity is still going to just do its thing.
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