This picture shows some of the lakes near the South Pole of Titan. Titan is Saturn's largest moon. The lakes are filled with methane and/or ethane. This picture was made from radar data from the Cassini spacecraft. The colors in the picture have been added. Blue areas are liquid methane/ethane, while brown areas are "dry land". These lakes are about 8 km (5 miles) long.
Image courtesy of NASA/JPL/USGS.