Suits are designed to protect against 'pressure', but there's no discrimination between low or high pressure.
If a suit has a pressure protection of one atmosphere (101.325), it provides 100% protection from space. Any number below that provides 0% protection from space.
This is why firesuits are 100% viable space suits; they protect enough from thermal loss to allow you to spend pretty much infinite time in space, and since they protect up to 3*ONE_ATMOSPHERE you can go through the vacuum of space with no problem.
Description of issue
Suits are designed to protect against 'pressure', but there's no discrimination between low or high pressure.
If a suit has a pressure protection of one atmosphere (101.325), it provides 100% protection from space. Any number below that provides 0% protection from space.
This is why firesuits are 100% viable space suits; they protect enough from thermal loss to allow you to spend pretty much infinite time in space, and since they protect up to 3*ONE_ATMOSPHERE you can go through the vacuum of space with no problem.
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