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oxygen (feddit.org)
submitted 10 months ago by to c/mars@discuss.tchncs.de
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[–] 3 points 10 months ago (2 children)

Oxygen isn't the real issue. The lack of atmosphere is a side effect of the real issue. No one will colonize Mars before Venus because the gravitational well issue is far harder to solve than pesky greenhouse gasses.

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  • [–] [S] 1 point 10 months ago (1 child)

    Mars can hold an atmosphere just fine, idk what you're talking about.

    Most of the martian atmosphere is CO2 and water vapor, and both freeze when it's cold enough. That's exactly what happens. The martian poles are so cold that the atmosphere freezes there and causes the martian polar caps. The atmosphere is there, just frozen.

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  • [–] 1 point 10 months ago* (last edited 10 months ago)

    The gravity well of Mars is about ⅓ that of Earth. Humans won't fare well there. Also Mars' atmosphere used to be much thicker from what I understand. It is slowly losing its atmosphere due to lack of gravity.

    Venus is easier to terradorm just because of it having a gravity well that is closer to 0.95-0.98 that of Earth. Throw some ice asteroids at it to create oceans and it may have an equal mass to the Earth.

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