Follow the historic descent of the Huygens probe onto Titan’s mysterious surface and see the first close-up images of frozen rivers, ice blocks, and rugged terrain. Learn how Cassini supported this ...

On Dec. 25, 2004, NASA’s Cassini spacecraft dropped a lander named Huygens at Titan, Saturn’s largest moon. Huygens was a European spacecraft that hitched a ride to the Saturn system with Cassini.

For more than a decade, scientists have accepted that Titan, Saturn’s biggest moon, has a subsurface ocean of liquid water. A new look at the data suggests otherwise. Reading time 4 minutes Over a ...

A tad bigger than planet Mercury, Titan is the largest and one of the most enticing of Saturn's over 150 moons. From so far out, and shrouded in mystery, it winks at us with the promise of potential ...

Between 1671 and 1684, Giovanni Cassini identified four moons of Saturn—Iapetus, Rhea, Tethys, and Dione—collectively designating them "Sidera Lodoicea." Rhea, discovered on December 23, 1672, is ...