These vast expanses of liquid, however, are not water but hydrocarbons such as methane and ethane, forming seas, lakes, and ...

(Unlike Earth, however, where most surface liquid is water, Titan is so frigid - about –290 degrees F [–179 degrees Celsius] ...

Titan is so frigid — about –290 degrees Fahrenheit [–179 degrees Celsius] — that the liquid present there is made up of hydrocarbons like methane and ethane.) But even such a large moon ...