Cassini pictures spongy Hyperion

It may have the look of a giant sponge, but this is Saturn's moon Hyperion, as pictured by the Cassini spacecraft. The US-European probe has just made a flyby of the satellite, crossing its surface at a distance of just 500km. The surface is speckled with impact craters which scientists say have been modified by some process, not yet understood, to create the strange look.

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http://news.bbc.co.uk/2/hi/science/nature/4298080.stm