ESA's Mars Express orbiter captured footage of the Mars' moon Deimos pass in front of Ganymede, Europa, Jupiter, Io and ...

During its time in orbit around Jupiter, Juno has delivered thousands of high-resolution images of the planet's atmosphere and several of its moons.

On the fiery Io, the innermost and third-largest of Jupiter’s four Galilean moons, Juno's observations have provided more insights about its incessant volcanic activity.

Jupiter moon of Io is famed for its volcanoes. NASA just spotted the most powerful one yet Not only was the hot spot larger than Earth’s Lake Superior, but it also was seen belching out ...

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 ...

More about Io: Jupiter moon of Io is famed for its volcanoes. NASA just spotted the most powerful one yet What is NASA's Juno spacecraft?

A massive NASA spacecraft is ready to set sail for Jupiter and its moon Europa. The craft, named Europa Clipper, will determine if conditions there could support life.

How many moons does Jupiter have? Scientists have discovered dozens of them, but the answer may be more complicated than it seems.

The full moon will come "with a celestial bonus—setting in the early morning sky near a dazzling alignment of Saturn, Venus, and Jupiter." ...

Europa Clipper will make a six-year journey to Jupiter to study Europa, an icy-surfaced moon that scientists believe has “ingredients for life.” ...

"Eight minutes later, the orbiter started receiving data from the descent probe, which slammed into the top of the Jovian ...

Recent flybys of the fiery world refute a leading theory of its inner structure—and reveal how little is understood about geologically active moons.