The Many Moons of Saturn

NASA's Cassini probe flies by a Saturn moon.

Setting Your Sights on Saturn

Setting Your Sights on Saturn
Setting Your Sights on Saturn
Setting Your Sights on Saturn
Setting Your Sights on Saturn
Setting Your Sights on Saturn
Setting Your Sights on Saturn
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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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