Saturn's largest moon Titan has a thick nitrogen atmosphere - unique among all the moons in the solar system. A new study suggests the atmosphere originated from organics being "cooked" in Titan's interior. Read more. Saturn's large moon Titan, with Mimas, another moon of Saturn, in the foreground, as seen by the Cassini spacecraft in 2013. Titan’s atmosphere is thick and hazy, and mostly nitrogen, like Earth’s. Where did the nitrogen come from? Image via NASA/JPL-Caltech/Space Science Institute. |