Can we swim forward in space with wide enough arms or wings attached in vacuum?
In: 0
You can’t swim in vacuum.
When you move your arms and legs you don’t have any air or water to push against.
You can twist and turn, but that will not move you forward.
The problem is that all the moment um of all your parts always adds up the same no matter how you redistribute the sum.
To get a change you would need to throw something away from you.
You can “swim” in zero g if you do it inside a space that has air.
In theory you could probably also swim in zero-g in water.
Latest Answers