Titan
Saturn's largest moon and the second-largest in the Solar System. Titan is unique for its dense nitrogen-rich atmosphere and the presence of liquid hydrocarbon lakes and rivers on its surface.
Source: science.nasa.gov
APODs including "Titan"
Huygens Images Titan's Surface
15/01/2005
After a seven year interplanetary voyage on board the the Cassini spacecraft, the European Space Agency's Huygens probe parachuted to a historic landing on Saturn's moon Titan on January 14. Above are two of the first raw images Huygens recorded of the mystery moon's surface - a view from an altitude of 16 kilometers (left), and surface level. The altitude image resolves features as small as about 40 meters. In the dramatic surface level vista, the light toned rock-like object below and left of center is only about 15 centimeters across and lies 85 centimeters from the probe. Remarkably, the views of Titan's surface suggest a similarity to eroded surfaces on Earth and Mars. News: Huygens Updates