Mimas is the smallest and innermost of Saturn's major moons. The surface area of Mimas is slightly less than the land area of Spain or California. The low density of Mimas, 1.15 g/cm 3, indicates that it is composed mostly of water ice with only a small amount of rock.

2024年11月3日 · Mimas is tidally locked: it keeps the same face toward Saturn as it flies around the planet, just as our Moon does with Earth. Most of the Mimas surface is saturated with impact craters ranging in size up to greater than 25 miles (40 kilometers) in diameter.

Mimas, smallest and innermost of the major regular moons of Saturn. It was discovered in 1789 by the English astronomer William Herschel and named for one of the Giants (Gigantes) of Greek mythology. moons of Saturn: Mimas Image of Mimas, backdropped by Saturn's hazy atmosphere, captured by a narrow-angle camera aboard Cassini, 2006.

2024年2月7日 · Astronomers have discovered that a tiny moon of Saturn, named Mimas, may harbor a hidden liquid ocean beneath its thick icy shell and may thus have the conditions for habitability.

2024年4月17日 · Mimas is nicknamed the "Death Star" due to the Herschel crater, which gives the moon an appearance resembling the Empire's moon-sized space station in Star Wars. This vast impact scar was...

2024年2月7日 · Mimas, a tiny moon of Saturn, might harbor an exceedingly young ocean beneath its icy crust. To planetary scientists, Mimas—one of Saturn’s moons—is best known for its uncanny resemblance to...

2024年2月7日 · A deep ocean exists beneath the icy, cratered surface of Saturn’s moon Mimas, according to a new analysis of data from NASA’s Cassini mission.