Titan, Saturn's largest moon, is the only object outside Earth known to have stable water on its surface. (Credit: NASA/JPL/University of Arizona/University of Idaho)
Scientists have long known about the presence of rivers and seas of liquid methane on Titan's surface, but new research shows that deltas are strangely absent.
On Earth, large rivers form deltas with sediments filling wetlands. Deltas form when a river's mouth connects to another body of water. Besides Earth, Titan is the only planetary body in our solar system with liquid on its surface.
Researchers recently searched for deltas on this large moon of Saturn, but found none.
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