Context. An image of Lyman-α (Lyα) emission from Europa obtained with the Hubble Space Telescope’s Space Telescope Imaging Spectrograph (HST/STIS) provided the first evidence for localized water vapor (H2O) aurora, […]
Exosphere
Posted inAstronomy & Telescopes, Atmospheres, Climate, Weather, Habitable Zones, Space Weather & Heliophysics, Status Report, TRAPPIST-1
Hubble’s Multi-Year Search for Exospheres in the TRAPPIST-1 System Reveals Frequent Microflares
Ly-α observations provide a powerful probe of stellar activity and atmospheric escape in exoplanetary systems.
Posted inGanymede, Icy Worlds, Jupiter, Magnetic Fields, Electromagnetism, bioelectricity,, Missions & Hardware, Radiation, Status Report
Ionosphere of Ganymede: Galileo Observations Versus Test Particle Simulation
In this paper, we model the plasma environment of Ganymede by means of a collisionless test particle simulation.
Posted inAtmospheres, Climate, Weather, Icy Worlds, Imaging & Spectroscopy, Pluto, Status Report, Titan, Triton
Atmospheres of Solar System Moons and Pluto
The atmospheres within our Solar System can be categorized into four distinct climate regimes: “terrestrial”, “Jovian”, “condensable”, and “exosphere”.
Posted inArctic / Antarctic / Alpine, Astrogeology, Atmospheres, Climate, Weather, Biogeochemical Cycles & Geobiology, Cryobiology, Europa, Icy Worlds, Mapping, Geodesy, Cartography, Bathymetry, Missions & Hardware, Robotics/Rovers/UAVs, ROVs/Submersibles/Diving, Status Report, Water/Hycean Worlds & Oceanography
Europa Clipper: Radar for Europa Assessment and Sounding: Ocean to Near-Surface (REASON)
The Radar for Europa Assessment and Sounding: Ocean to Near-surface (REASON) is a dual-frequency ice-penetrating radar (9 and 60 MHz) onboard the Europa Clipper mission. REASON is designed to probe […]
Posted inIcy Worlds
Exosphere-Mediated Migration of Volatile Species On Airless Bodies Across the Solar System
Surface-bound exospheres facilitate volatile migration across the surfaces of nearly airless bodies. However, such transport requires that the body can both form and retain an exosphere. To form a sublimation […]