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Bruce Murray Space Image Library

Global color view of Saturn's moon Dione from Cassini

Global color view of Saturn's moon Dione from Cassini
Global color view of Saturn's moon Dione from Cassini Dione's leading hemisphere is mostly dark except where it is cut by the so-called "wispy terrain." Cassini images like this one, taken on 24 July 2006, reveal that the wispy terrain, once thought to be possible volcanic flows, is actually composed of the bright, fresh, icy faces of tectonic fractures cut in to Dione's surface. NASA / JPL-Caltech / SSI / color composite by Gordan Ugarkovic