Callisto (/ kəˈlɪstoʊ / kə-LIST-oh) is the second-largest moon of Jupiter, after Ganymede. It is also the third-largest moon in the Solar System, following Ganymede and Saturn 's moon Titan, …

Apr 25, 2025 · Callisto is the most heavily cratered object in our solar system. Callisto is Jupiter’s second largest moon and the third largest moon in our solar system. Data from NASA’s …

Callisto, outermost of the four large moons (Galilean satellites) discovered around Jupiter by the Italian astronomer Galileo in 1610. It was probably also discovered independently that same …

Apr 19, 2023 · Callisto is Jupiter's second-largest moon and the outermost of the Galilean satellites. It has an ancient, cratered surface, indicating that geological processes could be dead.

4 days ago · The second-largest of Jupiter's Galilean moons and the third-largest moon in the Solar System, heavily cratered Callisto appears ancient and inactive with a dark, icy surface …

Callisto is similar in appearance to Ganymede, but with more craters and fewer of the linear fault features. The large series of concentric rings on the image above is named Valhalla. It …

Dec 7, 2025 · Callisto is one of four moons spotted by Galileo Galilei when he first studied Jupiter. It is the furthest of the four from the planet and is the most meteor-impacted moon of all the …

Callisto is one of the four Galilean moons of planet Jupiter. It is comprised of equal parts rock and ice and is geologically dead, with it's surface covered with the oldest craters in the solar …

Callisto [kah-LISS-toe] is the second largest moon of Jupiter, the third largest in the solar system, and is about the same size as Mercury. It orbits just beyond Jupiter's main radiation belt. …

Apr 22, 2025 · Callisto is Jupiter’s second largest moon and the third largest moon in our solar system; its surface is the most heavily cratered of any object in our solar system.