A massive asteroid struck Ganymede, Jupiter’s and the Solar System’s largest moon, roughly 4 billion years ago, producing a significant shift in its rotational axis. This event, which formed the conspicuous Valhalla Basin, was so powerful that it shifted Ganymede’s axis about 7 degrees, changing the moon’s geological history.
A team of astronomers using the W. M. Keck Observatory in Hawaii has discovered that aurorae at visible lengths appear on all four of Jupiter’s major moons, namely Io, Europa, Ganymede, and Callisto. The discovery was made using the High-Resolution Echelle Spectrometer (HIRES) at the Keck Observatory, as well as other high-resolution spectrographs at the Large Binocular Telescope and Apache Point Observatory.
The first two images from Juno spacecraft's June 7, 2021, flyby of Jupiter’s giant moon Ganymede have been received on Earth. This was the closest any spacecraft has come to this moon in a generation. The photos – one from the Jupiter orbiter’s…
NASA's Juno Jupiter probe has captured the first images of the north pole of Ganymede– the largest moon in the solar system and the only moon with its own magnetic field. During a close flyby of Jupiter in December 2019, Juno mapped the north polar regions of…
Hubble Space Telescope has the best evidence yet for an underground saltwater ocean on Ganymede, Jupiter’s largest moon. The subterranean ocean is thought to have more water than all the water on Earth's surface. Identifying liquid water is crucial in the
The largest moon in our solar system, a companion to Jupiter named Ganymede, might have ice and oceans stacked up in several layers like a club sandwich, according to new study led by JPL's Steve Vance that models the moon's makeup.Previously, the moon
A group of scientists led by Geoffrey Collins of Wheaton College has produced the first global geologic map of Ganymede, Jupiter's seventh moon. The map combines the best images obtained during flybys conducted by NASA's Voyager 1 and 2 spacecraft (1979) and
Jupiter will take center stage in the sky this month as it nears opposition to the sun. At opposition, expected on Oct. 29, Jupiter shines opposite the sun in our sky. Jupiter will rise in the eastern sky at sunset, stay out all night long and set in the west at
