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Rhea - Saturn's Moons SlideshowSaturn's moon Rhea is seen here in natural color. It shows a bright, wispy terrain that is similar in appearance to that of Dione seen in the previous slide. The Cassini spacecraft was about 500,000 kilometers from the moon, so the reasons for these scars are still unknown to astronomers. Astronomers believe Rhea's bright markings were created when a geologically recent impact sprayed bright, fresh ice ejecta over the moon's surface. Cassini images revealed that Dione's wispy terrain is comprised of many long, narrow, and braided fractures. Image Credit: NASA/JPL/Space Science Institute |
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