[astro-ph.EP] We investigate the transferability of Earth weather foundation models to planetary atmospheres by adapting the GraphCast graph neural weather forecasting model to Mars. While GraphCast achieves state-of-the-art performance for […]
Earth
Posted inAstrogeology
Ancient Rocks Reveal How Water Shaped Earth 3.1 Billion Years Ago
[Adelaide University] Geologists studying some of the planet’s oldest volcanic rocks have uncovered new evidence that water was playing a major role in shaping Earth’s interior and driving volcanic activity […]
Posted inLava / magma ocean / Volcanic Worlds
Coupled AtmospHere Interior modeL Intercomparison (CHILI). I. Evolutionary Modelling — Primordial Magma Oceans of Earth and Venus
[astro-ph.EP] Earth and Venus represent two evolutionary outcomes arising from initially molten ‘magma ocean’ periods, followed by lifetimes of chemical and geophysical divergence. Their physics is common to all rocky […]
Posted inMagnetic Fields, Electromagnetism, bioelectricity,
The Strongest Evidence To Date Of A Magnetic Field On An Exoplanet
[IAC] The Instituto de Astrofísica de Canarias (IAC) is taking part in an international study, published in the journal “Science”, which provides the first conclusive evidence of a planet’s influence […]
Posted inEuropa, Meteorites & Asteroids, Origin & Evolution of Life, Panspermia, Planetary Protection & Biosafety, Status Report, Water/Hycean Worlds & Oceanography
Earth As A Potential Source Of Llife For Europa’s Subsurface Ocean
The paper discusses the possibility of dust particles containing living bacteria ejected from Earth reaching Europa and landing on its surface.
Posted inAnalog Studies, Astrogeology, Caves, Craters, Mountains, Subsurface, Lava Tubes, Impact events, Mars, Press Release
Shocked Soil Discovered: Rare On Earth, But Abundant On Mars?
When a meteoroid strikes, it generates a wave of energy that moves faster than the speed of sound. When all that energy propagates through material in seconds or less before […]
Posted inAstrogeology, Lava / magma ocean / Volcanic Worlds, Moon, Origin & Evolution of Life, Status Report
Resonant Lunar Tides Of Earth’s Core And Basal Magma Ocean
Earth’s magnetic field is generated by fluid motion in the liquid-metal core and has been active for billions of year.
Posted inAstrogeology, Atmospheres, Climate, Weather, Biosignatures & Paleobiology, Desert Worlds, Exoplanets, -moons, -comets, Habitable Zones, Icy Worlds, Mars, Status Report
Coupling Dynamical Accretion And Chemical Differentiation: A Unified Framework For Earth-Mars Diversity
The distinct physical and geochemical differences between Earth and Mars provide fundamental constraints on terrestrial planet formation, yet a self-consistent framework linking dynamical and chemical aspects remains elusive.
Posted inAnalog Studies, Astrogeology, Atmospheres, Climate, Weather, Biochemistry & Organic Chemistry, Biogeochemical Cycles & Geobiology, Mars, Status Report
Anoxic Photo-oxidation Of Mn(II)-bearing Carbonates On Mars And Early Earth
Manganese oxides, thought to form almost exclusively through reactions between Mn2+ and O2, catalyze oxidative transformations among redox-sensitive metals. Thus, the occurrence of Mn oxides, either observed or inferred from […]
Posted inAtmospheres, Climate, Weather, Gaia - Planetary Perspectives, Habitable Zones, Press Release, Water/Hycean Worlds & Oceanography
A Warmer World May Redraw Earth’s Sunlight Map
Sunlight follows a rhythm set by Earth’s orbit and tilt: long summer days, dark winters, and a familiar seasonal cycle from low to high latitudes.