Cassini images a sea on Titan
3/15/2007 ,


comparison of lake on Titan with Lake Superior



NASA recently published a radar image of Saturn's largest moon Titan, acquired by the Saturn-bound Cassini spacecraft. The image shows a large dark feature on Titan, believed to be a lake.


The image, which is cropped from a larger image, is compared to an image of Lake Superior, on the right. It offers strong evidence of lakes filled with liquid hydrocarbons, such as methane and ethane, on Titan.


This lake, 100,000 km2 in area, is considerably larger than Lake Superior (82,000 km2), one of Earth's largest lakes. Scientists even classify it as a sea, as it covers a fraction of Titan (0.12%) larger than that covered on Earth by the Black Sea (0.085%).


The image on the right is from the Sea-viewing Wide Field-of-view Sensor (SeaWiFS) project, NASA's Goddard Space Flight Center.


Further reading

Titan Viewed by Cassini's Radar

Methane lakes on Titan



Aymen Mohamed Ibrahem

Senior Astronomy Specialist