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Post by Chicago Astronomer Joe on Oct 19, 2005 3:16:37 GMT -6
Dione in front of Saturn
(Oct 18, 2005) On October 11, 2005, Cassini flew within 500 km (310 miles) of the surface of Dione; one of Saturn's moons. Like many of Saturn's moons, Dione shows a heavily cratered surface, and unusual streaks in the terrain that dominates one whole hemisphere of the moon. Cassini found evidence that Dione's surface is covered by fractures, which run in roughly parallel lines; these are interrupted by larger bright features. Scientists are working with the data to compositional maps of Dione's surface.