The Saturn system may be the most beautiful in the solar system. As well as its spectacular rings, the Saturn system features more than 50 named moons and dozens of smaller moonlets.
The largest of Saturn’s moons, Titan, is larger than the planet Mercury. It has a dense atmosphere of mainly nitrogen and is the only place in the solar system, apart from earth, with seas of liquid at the surface.
The seas of Titan are very different from oceans on earth. Instead of water, they are comprised of the hydrocarbons methane and ethane, which are kept liquid by the below-freezing temperatures at Titan’s surface – about -300 degrees Fahrenheit (-185 degrees Celsius).