The delivery of water to the inner Solar System rocky planets, including Earth, remains debated, as standard models assume that they formed from dry grains, inside the snowline of the […]
protosolar nebula
Posted inAstrogeology, Biogeochemical Cycles & Geobiology, Callisto, Ganymede, Icy Worlds, Mapping, Geodesy, Cartography, Bathymetry, Press Release
Conditions For Accretion Favoring An Unmelted Callisto And A Differentiated Ganymede
Analysis of Callisto’s moments of inertia, derived from Galileo’s gravity data, suggests that its structure is not fully differentiated.
![Reprocessed images of Uranus [L]] and Neptune [R] NASA/JPL-Caltech (Uranus and Neptune); “Modelling the Seasonal Cycle of Uranus’s Colour and Magnitude, and Comparison with Neptune,” by Patrick G. J. Irwin et al., in Monthly Notices of the Royal Astronomical Society, Vol. 527, No. 4; February 2024 (reprocessed images)](https://i0.wp.com/astrobiology.com/wp-content/uploads/2024/06/Insights-on-the-Formation-Condition.png?resize=1200%2C721&ssl=1)
Posted inAstrochemistry, Astrogeology, Atmospheres, Climate, Weather, Gas Giants, Ice Giant, Icy Worlds, Neptune, Status Report, Uranus
Insights on the Formation Conditions of Uranus and Neptune from their Deep Elemental Compositions
This study, placed in the context of the preparation for the Uranus Orbiter Probe mission, aims to predict the bulk volatile compositions of Uranus and Neptune. Using a protoplanetary disk […]
Posted inAstrochemistry, Astrogeology, Biochemistry & Organic Chemistry, Biogeochemical Cycles & Geobiology, Biosignatures & Paleobiology, Comets and Asteroids, Icy Worlds, Neptune, Pluto, Status Report, Triton, Water/Hycean Worlds & Oceanography
Triton and Pluto: Same Origin But Separated At Birth [Two Possible Ocean Worlds]
Assessing the origin of Pluto and Triton has profound implications for the bigger picture of Solar System formation and evolution.