While Io, the most volcanically active moon in the solar system, appears completely dry and devoid of water ice, its neighbor ...

Although Europa is the fourth largest of Jupiter’s 95 moons, it’s the smallest of the Galilean moons – the largest being Ganymede. With an equatorial diameter of about 3,100 kilometres, Europa is ...

Turn a telescope to the eastern sky in the hours following midnight on Nov. 5 to see two colossal shadows darken the cloud tops of the gas giant Jupiter as the Galilean moons Io and Europa pass ...

Saturn reigns supreme when it comes to the number of moons orbiting any solar system planet. Including the 128 ...

The predawn hours of Aug. 8 present a perfect opportunity to see Jupiter's four largest moons line up next to the "King of the Planets" as it voyages through the stars of the constellation Gemini.

While Io, the most volcanically active moon in the solar system, appears completely dry and devoid of water ice, its neighbor ...