[astro-ph.EP] Io, Europa and Ganymede are locked in the well-known Laplace resonance, while Callisto is not, even though it is very close to the 7:3 mean motion resonance with Ganymede. […]
Jupiter
Posted inMissions & Hardware
Pioneer 10/11 Telemetry Explanatory Almanac
[astro-ph.IM] This document is intended to accompany our first release of edited Pioneer 10/11 telemetry data. The purpose of this data release is to provide a data set for the […]
Posted inAstrochemistry, Atmospheres, Climate, Weather, Biochemistry & Organic Chemistry, Biogeochemical Cycles & Geobiology, Exoplanets, -moons, -comets, Gas Giants, Imaging & Spectroscopy, Jupiter, Status Report
Detection Of Propadiene (CH2CCH2), Propene (C3H6) And Non-detection Of Propane (C3H8) In Jupiter’s Northern Polar Stratosphere
We report the first detection of stratospheric propadiene (CH2CCH2) and propene (C3H6) at Jupiter’s mid-to-high northern latitudes using IRTF-TEXES measurements recorded on March 5-6, 2025.
Posted inAstrogeology, Callisto, Ganymede, Icy Worlds, Imaging & Spectroscopy, Jupiter, Press Release
Ganymede Might Still Be Forming Its Metal Core Today
Jupiter’s moon Ganymede is the largest moon in the solar system; at over 3,200 miles across, it is larger than the planet Mercury. It is also the only moon with […]
Posted inAstrogeology, Biogeochemical Cycles & Geobiology, Ganymede, Icy Worlds, Jupiter, Magnetic Fields, Electromagnetism, bioelectricity,, Press Release, Water/Hycean Worlds & Oceanography
Motional Induction in Ganymede’s Ocean
We investigate the magnetic signature of oceanic circulation in Ganymede’s subsurface ocean using kinematic induction modeling. Our approach couples zonal jet flows from rotating thermal convection simulations with magnetic field […]
Posted inEnceladus, Europa, Ganymede, Habitable Zones, Icy Worlds, Imaging & Spectroscopy, Jupiter, Saturn, Status Report, Titan
Ammonia As A Parameter Shaping Habitability On Icy Moons
The search for life now extends beyond the traditional habitable zone to include the icy moons of Jupiter and Saturn. These moons feature ice-covered surfaces overlying substantial oceans formed primarily […]
Posted inAstrogeology, Atmospheres, Climate, Weather, Ganymede, Icy Worlds, Imaging & Spectroscopy, Jupiter, Space Weather & Heliophysics, Status Report
Constraining Electron-Impact Ionization of O2 Through UV Aurora Observations at Ganymede
While photoionization rates of Ganymede‘s O2 dominated atmosphere are well constrained, the contribution of electron-impact ionization is rather uncertain.
![Artist’s impression of the simulations conducted in this research. Jupiter (lower left) has a strong magnetic field which creates a cavity in its circumplanetary disk. Saturn (upper right) lacks a strong magnetic field so its circumplanetary disk evolves without a cavity. Credit: Yuri I. Fujii/L-INSIGHT [Kyoto University], Illustrator: Shinichiro Kinoshita](https://i0.wp.com/astrobiology.com/wp-content/uploads/2026/04/How-Jupiter-Cultivated.png?resize=1200%2C717&ssl=1)
Posted inAstrogeology, Callisto, Enceladus, Europa, Ganymede, Gas Giants, Icy Worlds, Io, Jupiter, Magnetic Fields, Electromagnetism, bioelectricity,, Press Release, Rhea, Saturn, Titan, Water/Hycean Worlds & Oceanography
How Jupiter Cultivated More Large Moons Than Saturn
The two largest planets in our Solar System, Jupiter and Saturn, also have the largest satellite systems, or the most moons. At present, Jupiter’s reported moon count stands at more […]
Posted inAtmospheres, Climate, Weather, Biophysics, Biosignatures & Paleobiology, Gas Giants, Jupiter, Magnetic Fields, Electromagnetism, bioelectricity,, Press Release
Lightning Bolts On Jupiter Pack More Than 100 Times The Power Of Earth’s Flashes
Jupiter, the most massive planet in our solar system, has correspondingly humongous storms, some of which last for centuries. Some of these storms also generate terrific bolts of lightning, according […]
Posted inBiogeochemical Cycles & Geobiology, Biosignatures & Paleobiology, Europa, Habitable Zones, Icy Worlds, Imaging & Spectroscopy, Jupiter, Mapping, Geodesy, Cartography, Bathymetry, Missions & Hardware, Origin & Evolution of Life, Status Report, Tricorders & Sensors, Water/Hycean Worlds & Oceanography
Biomarkers on the Icy Jovian Moons: Can Europa Also Provide Insights into Life’s Origin?
Within the payloads of JUICE and Europa Clipper, there are instruments suitable for the search of specific biosignatures that can diagnose life tracks in two ways.