Astronomers have uncovered additional evidence that one of Saturn’s smallest moons, Mimas, is hiding a global ocean beneath its icy surface. Building a stronger case for the presence of water — ...

The appearance of one of Saturn's smallest moons lends it the nickname "Death Star," but astronomers say new evidence suggests the world is, in fact, home to an ingredient vital for life: water. And ...

"We know that Enceladus' ocean is habitable thanks to Cassini measurements. We know there is liquid water, energy, and the chemicals carbon, hydrogen, nitrogen, oxygen, phosphorus and sulfur." When ...

By a small margin, Titan is the second-largest moon in the solar system, and is also the only moon with a thick atmosphere.

Sign up for CNN’s Wonder Theory science newsletter. Explore the universe with news on fascinating discoveries, scientific advancements and more. Astronomers have ...