Despite its bathtub-ready appearance, Hyperion—Saturn's largest irregularly shaped moon—is anything but spongy.

High-resolution images taken by NASA's Cassini spacecraft—including the picture above taken in 2005—suggest the satellite's cuplike craters are reservoirs for hydrocarbons. The finding could mean that the ingredients needed for life as we know it may be more common in our solar system than previously thought, according to NASA.

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