Mimas, one of Saturn’s smaller moons, gained its nickname after astronomers noticed a massive crater dominating its surface.

So were the words uttered by Jedi Master Obi-Wan Kenobi when he gazed upon the doomsday weapon, the Death Star, in 1977’s “Star Wars,” later subtitled “Episode IV: A New Hope.” The spherical ...

The case for a newborn ocean on Saturn's moon Mimas continues to build. Research mapping the thickness of the world's icy crust not only provides a window for how old an existing ocean might be but ...

Saturn's moon Mimas, imaged by the Cassini spacecraft. A new study shows how such small ice moons could sustain a liquid ocean beneath an icy shell, and how that could give rise to surface features.

Could the icy moons of our solar system hold life beyond our planet? Keith Cooper looks at how planetary scientists plan to find out ...