A new study suggests Ganymede—our neighborhood's biggest moon—still has a hot, churning core cranking out its unique magnetic field. Reading time 3 minutes Jupiter, the biggest planet in our solar ...

CNN — The Hubble Space Telescope has spied evidence of water vapor in the atmosphere around Jupiter's moon Ganymede, the largest moon in our solar system. The water vapor forms as the icy surface of ...

Ganymede’s auroras have always stood apart for one simple reason: this is a moon, not a planet, and yet it carries its own ...

A study conducted by researchers from the Institut de Physique du Globe de Paris (IPGP) and the CNRS shows that the ...

Already high in the east as darkness falls, Jupiter still dominates the constellation Gemini. The gas giant’s large moon Ganymede transits the disk this evening, with its shadow following a few hours ...

Add Yahoo as a preferred source to see more of our stories on Google. This natural-color image of Ganymede was captured by the Galileo spacecraft during its first flyby of the moon. (CREDIT: NASA/JPL) ...

Ganymede is not only Jupiter's largest moon, but also the largest in our solar system and one of the few that hosts a massive ice ocean. Adding to this planet-like moon's uniqueness is the fact that ...

The European Space Agency's (ESA's) Jupiter Icy Moons Explorer (JUICE) probe is on its (very long) way to Jupiter, and will finally arrive at the King of Planets in 2031. Its primary mission is to ...

Far from the Sun’s heat, orbiting the outer planets of the solar system, are moons with oceans of liquid water beneath their frozen surfaces. Keith Cooper finds out how planetary scientists are ...

Jupiter is not just the largest planet in our Solar System. It is also surrounded by a vast collection of moons, dozens of ...