Titan has rivers, rainfall, lakes and a slow hydrological cycle exactly like Earth's, except that every drop of it is liquid methane and the rock the rivers run over is water ice

Titan has rivers, rainfall, lakes and a slow hydrological cycle exactly like Earth's, except that every drop of it is liquid methane and the rock the rivers run over is water ice

Saturn’s largest moon, Titan, is the only place besides Earth known to have standing liquid on its surface, and with it rivers, rain, clouds, lakes and seas fed by a weather cycle that runs much like our own. The catch is in what the ingredients are. The rain and the rivers are liquid methane and ethane, and the ground they cut through is water ice, frozen so hard at Titan’s temperatures that it behaves like rock. It is the closest thing in the …