Callisto

Callisto is the one of the Galilean moons of Jupiter, the second largest. Its surface is old, showing the highest coverage by impact craters of any large body in the Solar System, but it has no volcanoes or large mountains. Callisto’s surface is one large ice-field, littered with cracksand craters from billions of years of collisions. This picture was taken in 2001 by the Galileo spacecraft.

Image Credit: NASA

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