The ocean on Ganymede may have more water than all the water on Earth. In this artist’s concept, the moon Ganymede orbits the giant planet Jupiter. NASA’s Hubble Space Telescope observed aurorae on ...

The seven most marvellous moon images by NASA include Titan, Ganymede, Io, Mimas, Europa, Phobos, and Enceladus.

In a landmark observation by a team of international researchers, NASA's Juno spacecraft has, for the first time, clearly ...

The moon's insides are crooked thanks to the near side being some 306 degrees Fahrenheit hotter at depth than its counterpart on the lunar far side. This is the conclusion of an international team of ...

Phases of ice that exist naturally only on frozen moons could be detected using infrared spectroscopy, according to new laboratory experiments.

On Sept. 21, 2003, NASA's Galileo mission to Jupiter and its moons came to an end. After 14 years of exploration, the Galileo ...

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.