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

NASA Juno mission captured amazing new imagery of Jupiter's moon Europa. The spacecraft flew about 219 miles (352 kilometers) ...

Jupiter and the moon will rise side by side in the same patch of sky, separated by only about six degrees, while transiting the astrological sign of Cancer. However, their apparent closeness is ...

The moon, just hours past its last quarter phase, will rise above the east-northeastern horizon shortly before midnight local ...

The hellish surface of a moon of Jupiter known as Io is riddled with hundreds of lava-spewing volcanoes that make the world one of chaos and violence. The brutal conditions also make Io intriguing to ...

New laboratory research suggests that some organic molecules previously detected in plumes erupting from Saturn’s moon ...

The universe has quasi-moons, mini-moons, and moonlets, but no official definition of what counts as a moon.

Webb just spotted a carbon-rich moon factory 625 light-years away, revealing how moons like ours may have first taken shape.

This illustration provided by NASA depicts the Europa Clipper spacecraft over the moon Europa, with Jupiter at background left. NASA/JPL-Caltech photo via AP CAPE CANAVERAL, Fla. — A NASA spacecraft ...