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)
Rhea (pron.: /ˈriːə/;[a]Ancient Greek: Ῥέᾱ) is the second-largest moon of Saturn and the ninth largest moon in the Solar System. It was discovered in 1672 by Giovanni Domenico Cassini.
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