SUMMARY: NASA's Cassini spacecraft has gotten a good look at Saturn's unusually shaped moon Hyperion. It has many fresh craters, giving it a spongy looking appearance. Scientists estimate that the moon is only 60% as dense as water, which means that much of its interior must be completely empty space. The images were gathered during a recent Hyperion flyby, when Cassini came within 168,000 km (104,000) of the moon.
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