Tuesday, May 13, 2008

Also There May Be Water Under Titan's Crust


Also on Cassini's most recent trip to Titan presents evidence that there may be water and ammonia under the crust. Even though Titan's surface is made of completely different things such as rivers and lakes of methane and organic hydrocarbon dunes it still has the most Earth like surface in the solar system. Cassini has made 19 separate passes over titan between October 2005 and May 2007. Her radar can see through Titan's dense, methane rich atmospheric haze allowing scientist to see features and noting locations on the surface. In using the data from earlier passes scientist searched for the same lakes, canyons, and mountains and found that they were offset by 30 km. Scientist believe that about 100 km beneath the ice and organic-rich surface is and internal ocean of liquid water mixed with ammonia. Titan is the only other planet in the solar system that posses a dense atmosphere, roughly 1.5 times denser than Earth's and is the largest of Saturn's moons and bigger than Mercury. Further passes will help scientist understand the tectonics of Titan as well as these discoveries are very appealing to astrobiologists.

No comments: