Finding lakes on Titan

It's not much for water-skiiing, but it's still a lake on another world, and we have pictures of it.

A giant, glassy lake larger than North America's Lake Ontario graces the south pole of Saturn's largest moon Titan, new research confirms.

"This is the first observation that really pins down that Titan has a surface lake filled with liquid," said lead researcher Robert Brown of the University of Arizona's Lunar and Planetary Laboratory in Tucson.

Called Ontario Lacus, the lake extends 150 miles (235 kilometers) and covers an area of about 7,800 square miles (20,000 square kilometers). The lake structure is filled mostly with methane and ethane, hydrocarbons that are gases on Earth but liquid on the bone-chilling surface of Titan.