Jupiter System

This brings Jupiter's total number of known moons to a whopping 79 -- the most of any planet in our solar system.

Data collected by NASA's Juno spacecraft point to a new heat source close to the south pole of Io that could indicate a previously undiscovered volcano on the small moon of Jupiter.

Newly resurrected data from Galileo’s first flyby of Ganymede is yielding new insights about the moon’s environment.

Scientists have documented atmospheric changes on Io, Jupiter’s volcanically active satellite, as the giant planet casts its shadow over the moon’s surface during daily eclipses.

The Hubble Space Telescope picks up clues from Ganymede's thin atmosphere.

Tides flowing in a subsurface ocean of molten rock, or magma, could explain why Jupiter's moon Io appears to have its volcanoes in the "wrong" place.

Airbus Defence & Space in France has been selected as the prime industrial contractor for ESA’s Juice mission to Jupiter and its icy moons.

bright explosions of Jupiter's aurora likely also get kicked off by the planet-moon interaction, not by solar activity.

The Hubble Space Telescope picks up clues from Ganymede's thin atmosphere.

NASA’s Hubble Space Telescope has the best evidence yet for an underground saltwater ocean on Ganymede, Jupiter’s largest moon.