If there was a contest for the most interesting moon in our solar system, Callisto would be a contender. Jupiter's ...

The latest analysis of data from the Galileo probe reveals surprising clues about Callisto, one of Jupiter's moons. These ...

New evidence from an old NASA mission supports the theory that Jupiter's moon Callisto is in fact an ocean world. Credit: NASA / JPL / DLR A moon of Jupiter about the size of Mercury likely has a ...

(Lead image: The Callisto demonstration in front of the ‘Commander’ mannequin inside the Orion spacecraft during Artemis I. Credit: NASA) ...

Callisto, the outermost of Jupiter’s 95 moons, first caught NASA’s attention back in the 1990s when the Galileo spacecraft detected an unusual response to the planet’s shifting magnetic field.

Now, researchers are more optimistic than ever that Callisto is a water world. Future missions like NASA's Europa Clipper and the European Space Agency's (ESA) JUICE are set to confirm whether ...

Europa is the sixth largest satellite in our Solar System and the smallest of Jupiter’s four Galilean moons. Discovered by ...

More pocked with craters than any other object in our solar system, Jupiter's outermost and second-biggest Galilean moon, Callisto, appears geologically unremarkable. In the 1990s, however ...

In late January this year, NASA’s Psyche spacecraft turned its cameras to the sky and captured some incredible images. The ...

A team, led by Corey J. Cochrane of the Planetary Interiors and Geophysics Group at NASA's JPL, didn't start out looking for an ocean on Callisto. According to Cochrane, the team was working on a ...

New evidence from an old NASA mission supports the theory that Jupiter's moon Callisto is in fact an ocean world.