Callisto is the second largest and furthest out of the Galilean moons. It is also the third largest
Callisto is the second largest and furthest out of the Galilean moons. It is also the third largest moon in the Solar System after Ganymede and Saturn’s Titan.Callisto is one of the most heavily cratered satellites in the solar system, with an extremely thin atmosphere composed of carbon dioxide and potentially oxygen.Daytime Temperature: 134K Nighttime Temperature: 80K -- source link
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