Assuming a planet has water, would it not be safe to assume it also already has ... | Hacker News

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		samstave on June 24, 2015 \| parent \| context \| favorite \| on: Single-catalyst water splitter produces clean-burn... Assuming a planet has water, would it not be safe to assume it also already has an atmosphere? Unless - you have a nuclear powered device which melts trapped CO2 ice and then generates O2?

JshWright on June 24, 2015 | [–]

Not really, no.

We're finding water (even liquid water) is actually _really_ common in our solar system (and presumably, in the universe as a whole).

Breathable atmospheres, on the other hand, are pretty rare.

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