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Published online 4 July 2007 | Nature | doi:10.1038/news070702-11

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Saturn's moon: a dirty sponge

Snapshots of Hyperion show its holey nature.

Saturn's moon Hyperion looks like a sponge — it is full of holes.

This image of Saturn's largest irregularly-shaped moon (see picture) was snapped by the Cassini spacecraft on a close flyby in September 2005, and shows Hyperion in all its porous glory.

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