If there was a contest for the most interesting moon in our solar system, Callisto would be a contender. Jupiter's second-largest moon has more impact craters on its surface than any other planetary ...

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.

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

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 ...

Jupiter's four largest moons: Io, Europe, Ganymede and Callisto. These images were taken by the Long Range Reconnaissance ...

Earlier this week, Saturn gained a whopping 128 new official moons, as the International Astronomical Union recognised ...

Earlier this week, Saturn gained a whopping 128 new official moons, as the International Astronomical Union recognised ...

Saturn surpasses Jupiter with 128 newly discovered moons, becoming the planet with the most moons in our solar system.

March's full moon, known as the Worm Moon, will bring a stunning total lunar eclipse, turning the Moon a deep reddish hue in ...

NASA's Europa Clipper is about to use Mars ... in addition to its larger cousins Ganymede and Callisto — performed a daring "first-ever double gravity assist maneuver" around the Earth to ...

The first reaction may be disappointment as what you see may not look like what you would expect in a NASA image, for example. This is because the chances are, you are looking straight at your ...