The paper discusses the possibility of dust particles containing living bacteria ejected from Earth reaching Europa and landing on its surface.
Earth
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.
Posted inAtmospheres, Climate, Weather, Biogeochemical Cycles & Geobiology, Biosignatures & Paleobiology, Exoplanets, -moons, -comets, Habitable Zones, Imaging & Spectroscopy, Status Report
Earth As A Transiting Exoplanet
Context. Detecting and characterizing the atmosphere of rocky planets in the habitable zone is a key objective of exoplanet research in the era of JWST and the upcoming E-ELT. Spectroscopy […]
Posted inAtmospheres, Climate, Weather, Biogeochemical Cycles & Geobiology, Biosignatures & Paleobiology, Impact events, Origin & Evolution of Life, Panspermia, Press Release
Impact History Of Early Earth Created Conditions Conducive To Life
Southwest Research Institute scientists modeled the early impact history of Earth, seeking insight into potential origins of life. These models show that asteroid impacts on the early Earth plowed up […]
Posted inAstrochemistry, Astrogeology, Comets and Asteroids, Exoplanets, -moons, -comets, Habitable Zones, Mars, Mercury, Meteorites & Asteroids, Press Release, Venus
New Experiments And Modeling On Iron Meteorites Provide Insight Into Young Solar System And Earth’s Building Blocks
Habitable planets require life-essential elements, like nitrogen and phosphorus. Understanding how those elements ended up in a planetary body can give insight into the formation of the solar system and […]
Posted inAstrochemistry, Astronomy & Telescopes, Biosignatures & Paleobiology, Exoplanets, -moons, -comets, Gas Giants, Ice Giant, Imaging & Spectroscopy, Press Release
NASA’s Roman Mission Preps to Unveil New Populations of Faraway Worlds
NASA’s Nancy Grace Roman Space Telescope is poised to make a major leap in the hunt for worlds outside our solar system, known as exoplanets. Scientists expect the mission to […]