Scientists have known for a while that Saturn's largest moon, Titan, has rivers and seas of liquid methane on its surface. But it's strangely lacking in deltas, a new study suggests.
On Earth, large rivers create deltas with sediment-filled wetlands. Deltas form when the mouth of a river empties into another body of water. Besides Earth, Titan is the only planetary body in our solar system with liquid flowing on the surface.
