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

Why does Jupiter look like it has a surface – even though it doesn’t have one? – Sejal, age 7, Bangalore, India The planet Jupiter has no solid ground – no surface, like the grass or dirt ...

Io’s long-debated magma ocean may not exist. Juno spacecraft data reveals that tidal forces deform the moon differently than ...

About 650 light-years from here, in the constellation Aquarius, lies the planetary nebula Caldwell 63, commonly known as the ...

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

The first major event of Europa Clipper's journey to Jupiter takes place this weekend as a gravity assist maneuver around the ...

A UVA professor is part of the study of Trojan asteroids, presumed remnants of the early solar system that share Jupiter’s ...

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

Lucy is preparing for a close encounter with the asteroid Donaldjohanson, a key milestone before its groundbreaking journey ...

NASA's Europa Clipper will fly past Mars today to adjust its trajectory and position itself for a critical phase of its ...

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 ...

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 ...