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by ink_13 639 days ago
Even setting aside that it's 95% CO2 and incredibly cold, most people have no appreciation for how thin the Martian atmosphere is. Surface pressure is 0.6% that of Earth, with maximum density 2% that of Earth's. It's not like Martian explorers could get away with just a respirator.
1 comments

Even with an oxygen mask, your blood starts to boil below 6.0% / 1psi