Cassini Finds Organic Material on Titan Tue Apr 26, 9:43 AM ET Add to My Yahoo! Science - AP PASADENA, Calif. - A close flyby of Saturn's big moon Titan by the international Cassini spacecraft revealed an upper atmosphere brimming with complex organic material, a finding that could hold clues to how life arose on Earth, scientists said Monday. Photo AP Photo Cassini flew within 638 miles of Titan's frozen surface on April 16 and discovered a hydrocarbon-laced upper atmosphere. Titan's atmosphere is mainly made up of nitrogen and methane, the simplest type of hydrocarbon. But scientists were surprised to...