Titan
• Largest moon of Saturn
• Has thick atmosphere
– Pressure ~ 1 earth
atmosphere
– Mostly N2, some CH4
– Gas held because of low T
• UV acting on CH4 smog
– Ethane produced – Lakes?
– Can “see” surface only in IR
• Cassini will drop probe in
Fall 2004
• “Code of the Lifemaker” by
James P. Hogan, good sf