My kid has been asking me what happens to austronauts if they take their suits off in space. I cant explain it properly since I’m not entirely sure too.
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There is no air in space, and therefore zero air-pressure.
We need air and air-pressure to stay alive. The suit is pumped up with air like a balloon until it is 1 atmosphere of air pressure, the same as the surface of earth. Then the astronaut can breathe normally inside the suit and special machines in the suit take away the stale air and pump in fresh air.
If they took the suit off, all the air would rush out like if we cut the balloon. The Astronaut would get very cold and couldn’t breathe, and the liquids in their body would either boil or freeze which would kill them.
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