Tuesday, May 23, 2006

Dione Occults Rhea


And another Cassini gem - Dione and Rhea pair up as seen by Cassini on April 17. A pair of crescent moons, with the dark side of Dione just beginning to pass in front of its distant sibling's lit side. Gorgeous... the stuff of science fiction, but it's science reality.

Some idea of distance can be gleaned from the relative sizes of these two moons: Dione (in front) is 1,126 kilometers (700 miles) across and Rhea is 1,528 kilometers (949 miles) across.

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