3 ms·
Without enough gravity, your atmosphere leaks away into space. This may have already happened to mars once.
by okonomiyaki3000 8y ago
Without enough gravity, your atmosphere leaks away into space. This may have already happened to mars once.
- sigstoat 8y agohappened once? because the gravity changed? it'd be an ongoing process. and only hydrogen and helium are currently prone to jeans escape on mars. the current dominant mechanism for atmospheric loss is the solar wind. which eats away ~1/3 megaton/century. mars has teratons of atmosphere remaining. and it can be added faster than that rate of loss. (once warmed up, oxygen may begin to escape the atmosphere again. not necessarily faster than it can be replaced, though.)