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Questions about Europa, a moon of Jupiter with a planet-wide ocean under a thick ice crust.

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Would Europa be an ocean planet if it were in the habitable zone?

In the habitable zone, the Sun would warm up and melt Europa's icy surface which will first turn into water vapor because Europa has no atmosphere, but the water vapor might form an atmosphere around Europa … (which would contain oxygen as well) and eventually Europa might get a liquid water surface. …
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