Unlike any other moon, Io is locked in a gravitational tug-of-war between Jupiter and its neighboring moons, stretching and ...

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

Io, moon of Jespiter Jupiter, is famously volcanically active. It has more than 400 active volcanoes, over an area the size of Asia. Some of the volcanic mountains are taller than Mount Everest.

Researchers have found Saturn’s moon Enceladus has heat circulating beneath its icy crust, meaning the chemistry of biology ...