Ganymede is Jupiter's largest moon and is also the largest moon in the entire solar system. It is bigger than both Mercury and dwarf planet Pluto and only slightly smaller than Mars. The moon likely ...

Left to right: The mosaic and geologic maps of Jupiter’s moon Ganymede were assembled incorporating the best available imagery from NASA’s Voyager 1 and 2 spacecraft and NASA’s Galileo spacecraft.

Jupiter’s moon Ganymede is a study in contrasts: Bright swaths of pure, frozen water slice through darker, heavily cratered ice. New stereo images of Ganymede suggest these swaths are the aftermath of ...

Today, NASA announced evidence that Jupiter's largest moon, Ganymede, contains a liquid water ocean floating beneath its crust. The discovery is a masterpiece of indirect detection, using Hubble Space ...

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An asteroid 20 times larger than the one that may have wiped out the dinosaurs struck Jupiter's moon Ganymede some 4 billion years ago, dramatically shifting the possibly life-hosting satellite's axis ...

Astronomers have found the most conclusive evidence yet that a large watery ocean lies beneath the surface of Jupiter’s moon Ganymede. With the discovery, Ganymede joins Enceladus and Europa as ...

Jupiter's largest moon, Ganymede, knocked scientists' socks off in 1996 when astronomers realized it is the only moon that creates its own magnetic field. Now scientists have brushed off more data ...

NASA has detected water vapor for the very first time in the atmosphere of Ganymede — not only Jupiter's largest moon, but the largest moon in our entire solar system. Researchers made the discovery ...

NASA's Juno spacecraft captured vivid images of Jupiter's moon Ganymede during a flyby on June 7. Credit: NASA/JPL-Caltech/SwRI/MSSS Ganymede, a behemoth of an icy moon in Jupiter's orbit, was ...

NASA's Hubble Space Telescope, monitoring subtle shifts in auroras flickering around Jupiter's moon Ganymede, has confirmed the presence of a deep salt-water ocean 95 miles below the icy crust of the ...