Battle scarred Rhea is the second-largest moon of Saturn. It was photographed by Voyager 1 in 1980 and is thought to be mainly composed of water ice pocked with craters left by numerous impacts.

Rhea was discovered by the Italian-born French astronomer Gian Domenico Cassini in 1672.

Photo: Rhea taken by the Cassini probe (NASA/JPL/Space Science Institute)


About Rhea

Rhea (/ˈriə/ REE-ə; Ancient Greek: Ῥέᾱ) is the second-largest moon of Saturn and the ninth-largest moon in the Solar System. It is the second smallest body in the Solar System, after the asteroid and dwarf planet Ceres, for which precise measurements have confirmed a shape consistent with hydrostatic equilibrium. It was discovered in 1672 by Giovanni Domenico Cassini.

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