At Jupiter, part of the auroral radio emissions are induced by the Galilean moons Io, Europa and Ganymede. Until now, except for Ganymede, they have been only remotely detected, using […]
Callisto
Posted inCallisto, Europa, Ganymede, Icy Worlds, Io, Jupiter, Mapping, Geodesy, Cartography, Bathymetry, Missions & Hardware, Status Report
Combining Astrometry and JUICE — Europa Clipper Radio Science To Improve The Ephemerides Of The Galilean Moons
The upcoming JUICE and Europa Clipper missions to Jupiter’s Galilean satellites will provide radio science tracking measurements of both spacecraft. Such data are expected to significantly help estimating the moons’ […]
Posted inAway Teams & Field Reports, Biochemistry & Organic Chemistry, Biogeochemical Cycles & Geobiology, Extremeophiles and Extreme Environments, Robotics/Rovers/UAVs, ROVs/Submersibles/Diving, Water/Hycean Worlds & Oceanography
Away Team Report: New Hydrothermal Vent Fields Discovered On Earth’s Mid-Atlantic Ridge
Astrobiology.com Editor’s Note: as we start to send our robotic astrobiology explorers to the Jovian system to explore icy ocean worlds Europa, Ganymede, and Callisto, the skills developed exploring (the […]
Posted inAway Teams & Field Reports, Callisto, Europa, Ganymede, Icy Worlds, Missions & Hardware, Press Release, Water/Hycean Worlds & Oceanography
JUICE Leaves Earth On An Astrobiology Expedition To Jupiter’s Ocean Moons
ESA’s Jupiter Icy Moons Explorer (Juice) lifted off on an Ariane 5 rocket from Europe’s Spaceport in French Guiana at 14:14 CEST on 14 April. The successful launch marks the […]
Posted inCallisto, Europa, Ganymede, Habitable Zones, Icy Worlds, Jupiter, Missions & Hardware, Press Release, Water/Hycean Worlds & Oceanography
Spotlight On Ganymede, JUICE’s Primary Target
A key focus of ESA’s Jupiter Icy Moons Explorer (Juice) will be Ganymede: Jupiter’s largest moon, and an ideal natural laboratory for studying the icy worlds of the Solar System.
Posted inCallisto, Europa, Ganymede, Icy Worlds, Imaging & Spectroscopy, Space Weather & Heliophysics, Status Report
The Optical Aurorae of Europa, Ganymede and Callisto
The tenuous atmospheres of the Galilean satellites are sourced from their surfaces and produced by a combination of plasma-surface interactions and thermal processes. Though thin, these atmospheres can be studied […]
Posted inAstrochemistry, Biosignatures & Paleobiology, Callisto, Enceladus, Europa, Ganymede, Icy Worlds, Imaging & Spectroscopy, Mimas, Pluto, Press Release, Triton
Spectroscopic Detection of Biosignatures in Natural Ice Samples as a Proxy for Icy Moons
Some of the icy moons of the solar system with a subsurface ocean, such as Europa and Enceladus, are the targets of future space missions that search for potential extraterrestrial […]
Posted inAstrochemistry, Astrogeology, Europa, Ganymede, Icy Worlds, Status Report
Early Stages Of Galilean Moon Formation In A Water-depleted Environment
A key feature of the Galilean satellite system is its monotonic decrease in bulk density with distance from Jupiter, indicating an ice mass fraction
Posted inBiogeochemical Cycles & Geobiology, Callisto, Icy Worlds, Imaging & Spectroscopy, Press Release
Callisto’s Atmosphere: First Evidence For H2 And Constraints On H2O
We explore the parameter space for the contribution to Callisto’s H corona observed by the Hubble Space Telescope (Roth et al. 2017a) from sublimated H2O and radiolytically produced H2 using […]
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 […]