Saturnís moon Rhea

Saturnís moon Rhea

. The icy, cratered surface of Saturnís satellite Rhea is shown in this Voyager 1 image, taken on 12 November 1980. The craters and landscape resemble those on Mercury and the Earthís Moon. Rhea probably froze and became rigid, behaving like a rocky surface, very early in its history. (Courtesy of NASA and JPL.)

Copyright 2010, Professor Kenneth R. Lang, Tufts University