A strange, spider-like scar on Jupiter's icy moon Europa may mark where salty water once surged up through its fractured ...

Saturn's innermost moon, which resembles the Death Star from Star Wars, may be a "stealth" ocean world, according to new research. Mimas, which is the smallest and closest to Saturn of the ringed ...

The period features lunar close approaches to Uranus and Jupiter, including the Last Quarter Moon phase. Jupiter also presents transit events of its Galilean moons, Io and Europa, accompanied by their ...

The waning moon shines close to the king of the planets on Dec. 7.