A key feature of the Galilean satellite system is its monotonic decrease in bulk density with distance from Jupiter, indicating an ice mass fraction
Jupiter
Posted inAstrogeology, Atmospheres, Climate, Weather, Biogeochemical Cycles & Geobiology, Ganymede, Habitable Zones, Icy Worlds, Imaging & Spectroscopy, Status Report
Probing Ganymede’s Atmosphere With HST Lyα Images In Transit Of Jupiter
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.
Posted inEuropa, Icy Worlds, Missions & Hardware, Press Release
Europa Clipper’s Reaction Wheels Have Been Installed
Europa Clipper, the enormous spacecraft that will head to Jupiter’s moon Europa uses four large reaction wheels to help keep it oriented.
Posted inEuropa, Icy Worlds, Imaging & Spectroscopy, Jupiter, Missions & Hardware, Press Release, Water/Hycean Worlds & Oceanography
Highest-Resolution Close-Up of Jupiter’s Moon Europa Yet By Juno
Observations from the spacecraft’s pass of the moon provided the first close-up in over two decades of this ocean world, resulting in remarkable imagery and unique science.
Posted inEuropa, Icy Worlds, Imaging & Spectroscopy, Missions & Hardware, Press Release, Water/Hycean Worlds & Oceanography
Controlled Mosaic Of Europa Taken By Juno From PJ45
This Geometrically controlled mosaic of Europa from Juno’s Perijove 45. Pixel scale is 1008 meters per pixel and this view is centered at 11.7 N, 0.6 W.
Posted inEuropa, Imaging & Spectroscopy, Press Release
First Juno Image From Europa Flyby
Observations from the spacecraft’s pass of the moon provided the first close-up in over two decades of this ocean world, resulting in remarkable imagery and unique science.
Posted inEuropa, Icy Worlds, Press Release, Water/Hycean Worlds & Oceanography
Juno Will Perform A Close Flyby of Europa
As the Juno spacecraft makes a close approach of Europa, it is expected to provide valuable science – and remarkable imagery – for NASA’s upcoming Europa Clipper mission.
Posted inExoplanets, -moons, -comets, Habitable Zones, Press Release
Could More Of Earth’s Surface Host Life?
Of all known planets, Earth is as friendly to life as any planet could possibly be — or is it? If Jupiter’s orbit changes, a new study shows Earth could […]
Posted inAstrochemistry, Europa, Icy Worlds, Imaging & Spectroscopy, Missions & Hardware, Press Release
Constraining Europa’s Subsolar Atmosphere With A Joint Analysis Of HST Spectral Images And Galileo Magnetic Field Data
We constrain Europa’s tenuous atmosphere on the subsolar hemisphere by combining two sets of observations: oxygen emissions at 1304 Å and 1356 Å from Hubble Space Telescope (HST) spectral images, […]
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 […]