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

NASA's Voyager 1 spacecraft discovered active volcanoes on Jupiter's moon Io. Before Voyager 1 flew by Io, scientists ...

Europa, one of Jupiter’s intriguing moons, is hiding an ocean beneath its icy shell — an ocean that might harbor alien life.

Jupiter's second-largest moon has more impact craters on its surface than any other planetary body in the solar system, and it has tons of ice on its surface as well. For decades. researchers ...

When a mudflat crumbles on Earth, or an ice sheet splinters on one of Jupiter's moons (Europa), or an ancient lakebed breaks ...

Using data collected by NASA’s Juno spacecraft as it flew past Jupiter’s highly volcanic moon Io in late 2023 and again in ...

Unlike Earth and other rocky planets, Jupiter lacks a solid surface. It’s composed entirely of gas and liquid, making it impossible to land on or walk across. Largest Planet in the Solar System ...

In the 1990s, however, NASA's Galileo spacecraft captured magnetic measurements near Callisto that suggested that its ice shell surface—much like that of Europa, another moon of Jupiter—may ...

NASA’s Juno spacecraft identifies over 40 enormous lava lakes on Io, shedding light on the extreme volcanism sculpting Jupiter’s moon.

NASA's Europa Clipper will fly past Mars today to adjust its trajectory and position itself for a critical phase of its 1.8-billion-mile (2.9-billion-kilometer) trek to the Jupiter system.