Photo: Saturn Moon Has Lakes, "Water" Cycle Like Earth's, Scientists Say

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Radar-imaging data from the Cassini spacecraft has revealed that Saturn's giant moon Titan likely has lakes of methane on its surface, indicated by the darker coloring in the image above.

What's more, the flyby also provided evidence that Titan has a hydrological cycle remarkably similar to that of Earth's, though with methane as the key component, not water.

Image courtesy NASA/JPL/USGS

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