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Geysers from tiger-stripe fissures: This mosaic of two Cassini images shows water plumes emanating from four cracks in the surface of the southern polar region of the Saturn moon Enceladus. From left to right, the fractures are named Alexandria, Cairo, Baghdad and Damascus. | NASA/JPL-Caltech/Space Science Institute
Planets

Cassini Mission to Saturn Reveals Where Life Might Be Possible on Its Moons

The conditions needed to support life as we know it may be present on several of the planet’s 53 confirmed moons.

Tiger stripe on Enceladus | NASA/JPL-Caltech/Space Science Institute
A slice of Titan: Radio-science studies using Cassini signals sent to NASA's Deep Space Network suggest that this moon harbors a global ocean lying between a frozen water-ice crust above and a high-pressure ice layer below. The silicate core of Titan is likely infused with water as well. | A. Tavani/NASA
Dione in front of Saturn: Cassini's wide-angle camera shot three images — through blue, green and infrared filters — as the spacecraft flew 24,200 miles (39,000 km) from the moon to produce this photo. | NASA/JPL-Caltech/SSI
Snow-globe worlds: Observations by the Cassini-Huygens mission suggest that three Saturn moons harbor liquid-water oceans beneath their icy shells. | NASA/JPL-Caltech