Titan is the largest moon of Saturn and the second largest natural satellite in the Solar System.  It was of great interest to NASA because its compact air made it tricky to ascertain what its surface may possibly be like. However, the climate, including rain and wind, creates features including deserts, rivers, rivers and lakes, leading many to believe it possesses similarities to Earth. 

NASA: How space service was conquered to make SHOCK discovery

Titan is the largest moon of Saturn and the second largest natural satellite in the Solar System.  It was of terrific interest to NASA because its compact air made it tricky to ascertain what its surface may possibly be like. However, the climate, including rain and wind, creates features including deserts, rivers, rivers and lakes, leading many to believe it possesses similarities to Earth. 

NASA: The space agency was beaten to make SHOCK discovery

He said in the very first incident which aired May 28: “Among all these moons there is one above all others we think perhaps gets the very best possibility of becoming a place which we’d recognise.

“Way out in the cold, remote reaches of the Solar System, beyond Jupiter, across the icy-ringed planet of Saturn orbits a stone.

“Titan — a planet-sized moon larger than Mercury surrounded with a thick atmosphere of nitrogen and methane using a surface that’s remained a mystery.