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The Many Moons of Saturn
NASA's Cassini probe flies by a Saturn moon.
Setting Your Sights on Saturn
The Cassini probe flew past Hyperion, one of the largest of Saturn's 60 known moons, and found its surface covered in hydrocarbons — the same compounds that make life possible on Earth. Hyperion is too cold and airless for life, but scientists were surprised.
In this image, a color map of chemicals on Hyperion is superimposed on a photograph of it. Blue is ice; red, magenta and yellow show mixes of carbon dioxide.
(NASA/JPL/University of Arizona/Ames/Space Science Institute)
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