Water-Ice Geysers At least 30 separate water-ice geysers shoot from the moon Enceladus in this image. After discovering this remarkable activity in 2005, Cassini flew through the plumes and found them full of life-friendly molecules. “Our discovery of salty liquid water bathed in heat and suffused with organic compounds under the south pole of Enceladus is, the most exciting discovery that has ever been made in our solar system,” Porco says. “It’s a habitable zone, and it’s accessible.”
How old are Saturn's rings? No one is quite sure. One possibility is that the rings formed relatively recently in our Solar System's history, perhaps only about 100 million years ago when a moon-sized object broke up near Saturn. Evidence for a young ring age includes a basic stability analysis for rings, and the fact that the rings are so bright and relatively unaffected by numerous small dark meteor impacts.
When the Voyager 1 and 2 spacecraft flew by Saturn in 1980 and 1981, they were able to pay only fleeting attention to Titan, the second largest moon in the solar system (larger even than the planet Mercury) and the only solar system moon with an appreciable atmosphere. These images are from subsequent Titan flybys in 2005 and 2006. - Image credit: NASA / JPL / University of Arizona