We report results from far-ultraviolet observations by the Hubble Space Telescope of Jupiter’s largest moon Ganymede transiting across the planet’s dayside hemisphere.
Ganymede
Posted inAstrogeology, Biogeochemical Cycles & Geobiology, Biosignatures & Paleobiology, Enceladus, Europa, Ganymede, Icy Worlds, Mars, Missions & Hardware, Press Release, Water/Hycean Worlds & Oceanography
Enabling Ice Core Science On Mars And Ocean Worlds
Ice deposits on Earth provide an extended record of volcanism, planetary climate, and life.
Posted inEuropa, Ganymede, Icy Worlds, Imaging & Spectroscopy, Press Release
Sharpest Earth-based Images Of Europa and Ganymede Reveal Their Icy Landscapes
The cocktail of chemicals that make up the frozen surfaces on two of Jupiter’s largest moons are revealed in the most detailed images ever taken of them by a telescope […]
Posted inGanymede, Icy Worlds, Imaging & Spectroscopy, Mapping, Geodesy, Cartography, Bathymetry, Missions & Hardware, Press Release
Global Modelling of Ganymede’s Surface Composition: Near-IR Mapping from VLT/SPHERE
We present maps of Ganymede’s surface composition with almost complete longitude coverage, acquired using high spatial resolution near-infrared (0.95 to 1.65μm) observations from the ground-based VLT/SPHERE instrument. Observed reflectance spectra […]
Posted inGanymede
On The Origin Of Molecular Oxygen On The Surface Of Ganymede
Since its first identification on the surface of Ganymede in 1995, molecular oxygen (O2) ice has been at the center of a scientific debate as the surface temperature of the […]
Posted inCallisto, Europa, Ganymede, Icy Worlds, Jupiter
Thermal Conductivity Measurements Of Macroscopic Frozen Salt Ice Analogs Of Jovian Icy Moons In Support Of The Planned JUICE Mission
The study of thermal properties of frozen salt solutions representative of ice layers in Jovian moons is crucial to support the JUpiter ICy moons Explorer (JUICE) (ESA) and Europa Clipper […]
Posted inGanymede, Jupiter
Hubble Finds First Evidence of Water Vapor at Jupiter's Moon Ganymede
For the first time, astronomers have uncovered evidence of water vapor in the atmosphere of Jupiter’s moon Ganymede. This water vapor forms when ice from the moon’s surface sublimates — […]
Posted inCallisto, Ganymede
A Tenuous, Collisional Atmosphere On Callisto
A simulation tool which utilizes parallel processing is developed to describe molecular kinetics in 2D, single-and multi-component atmospheres on Callisto. This expands on our previous study on the role of […]