Sol/Callisto
Callisto is the second largest moon after Ganymede orbiting Jupiter. It was discovered in 1610 by Galileo Galilei. It has 99% the diameter of Mercury and is much less massive. Callisto's surface consists of rocks and ice spread evenly and about 1.83 g/cm³ high.[1]

References
Gallery
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Callisto in Sol - ED Beyond
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Callisto and Jupiter - ED Horizons