I have come across multiple videos where an astronaut will let go of an object (just watched one where it was a bolt), and all of them tend to float upwards relative to the camera. Could it just be that earth is actually positioned “up” from the camera so gravity has an effect? or is it that when they let go of the object, they are subtly pushing it upwards? idk could somebody explain.
In: Physics
Okay, I am going to try my best to explain it.
Firstly, in a zero g environment, things are *very* sensitive to the smallest force. So, the act of releasing your grip on something might cause microscopic force to be exerted on the thing being released by the muscles in the hand.
Second, air flow in the habitation places play an effect. If there were no air flow, as astronauts breathe in a zero g environment they would use up the O2 around them. To combat this, 02 is pumped in to replace the C02, which gets pumped out. This creates a general air flow in the environment. Without seeing the specific insrance(s) you are talking about, that would be a really good second guess.
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