A key feature of the Galilean satellite system is its monotonic decrease in bulk density with distance from Jupiter, indicating an ice mass fraction
Callisto
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 […]
Posted inIcy Worlds, Jupiter, Press Release
Jupiter's Moons Could Be Warming Each Other
Jupiter’s moons are hot. Well, hotter than they should be, for being so far from the Sun. In a process called tidal heating, gravitational tugs from Jupiter’s moons and the […]
Posted inIcy Worlds, Press Release
Inclination Damping On Callisto
Callisto is thought to possess a subsurface ocean, which will dissipate energy due to obliquity tides. This dissipation should have damped any primordial inclination within 1 Gyr – and yet […]
Posted inIcy Worlds, Press Release
Powering the Galilean Satellites with Moon-Moon Tides
There is compelling evidence for subsurface water oceans among the three outer Galilean satellites, and evidence for an internal magma ocean in the innermost moon, Io. Tidal forces from Jupiter […]