Pressurized Breathing in Vacuum
Cluster focuses on the dangers and feasibility of breathing pressurized air or pure oxygen in vacuum or low-pressure environments, debating issues like oxygen toxicity, hypoxia, partial pressures, and lung effects.
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Breathing pressurized air in vacuum is not such a good idea.
Does it have to be 100% oxygen due to pressure or?
Strongly suspect you don't want pressurised oxygen-containing-atmosphere in that situation.
That seems like a poor idea.https://en.wikipedia.org/wiki/Oxygen_toxicity
Wouldn't be the lower oxygen levels in the atmosphere be a problem here?
100% oxygen under high pressure is dangerous
Is there an issue of not being able to hold your breath in low pressure?
Pure oxygen at low pressure might actually work. I'm pretty sure the lungs can take 0.1 atm pressure differential, and it should be enough oxygen to stay conscious indefinitely.
If you put a human in an environment with 20% of sea level pressure, and feed them 20% sea level pressure air, they will suffocate.If you were to somehow feed them 100% sea level pressure air through a perfectly sealed mask, they will be unable to exhale and/or get some kind of fatal side effects (burst lungs or air bubbles making it into the blood stream). So you have to feed the breathing gas at the surrounding pressure.If, however, you give them 100% oxygen at 20% sea level
How does the thin air/lack of oxygen not mess with them over that many days?