Quote:
Originally posted by ceremonials
Right
- Ganymede is the biggest moon
- Io is the most volcanically active body in the solar system
- Europa is basically one big frozen ocean
- and Callisto is Callisto
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They have actually said Europa may be one of the only nearby satellites that could support long term life, as the atmosphere is Oxygen.
They believe there is a strong chance it could be the only other satellite in our Solar System that has life.