Do Titan’s seas resemble earthly seas? Researchers say yes

View larger. | This is a liquid sea on an alien world. Ligeia Mare is the 2nd-largest sea on Saturn’s large moon Titan. You can also see rivers in this radar image from the Cassini spacecraft in 2013. A new study shows that Titan’s seas, lake and rivers behave much like their counterparts on Earth even though they are composed of liquid methane and ethane. Image via NASA.

• Saturn’s large moon, Titan, has seas. The seas are liquid, but the liquid isn’t water. It’s methane and ethane.
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