Callisto, Jupiter's second-largest moon, may have a rocky surface with an ocean beneath the surface. Corey J. Cochrane, NASA/JPL-Caltech.

Callisto is the outermost of the Galilean moons. When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. Callisto is Jupiter's second-largest moon ...

Jupiter's four largest moons are some of the solar system's most compelling worlds. Io is dotted with active volcanoes , and Europa hides a subsurface ocean many want to check for alien life .

Callisto, Jupiter's moon, is likely an ocean world, with evidence suggesting a subsurface ocean beneath its ice shell. Reanalysis of Galileo spacecraft data, ...

Jupiter moons Callisto and Ganymede are among the biggest in the solar system, and potential grounds for liquid water and alien life. NASA's JUICE mission will probe them for signs of both.

Callisto, despite being the second-largest of Jupiter's ridiculous number of moons and the third-largest moon in the Solar System, doesn't get a whole lot of attention.

The new evidence regarding Callisto comes from a somewhat surprising place: old data. NASA's Galileo mission, which launched into space in 1989, was designed to study Jupiter, its moons, and its ...

Meet Io, Europa, Ganymede and Callisto. Jupiter has dozens of moons. Four of them in particular are of interest to planetary scientists. Io, Europa, Ganymede and Callisto are, ...

Europe's JUICE probe will study three of Jupiter's icy moons, looking ... JUICE will focus primarily on Callisto and Ganymede, making 21 flybys of the former and 12 of the latter.

Callisto, Jupiter's second-largest moon, may have a rocky surface with an ocean beneath the surface. Corey J. Cochrane, NASA/JPL-Caltech ...