Posted inAstrogeology, Atmospheres, Climate, Weather, Exoplanets, -moons, -comets, Lava / magma ocean / Volcanic Worlds, Meteorites & Asteroids, Origin & Evolution of Life, Press Release

Geologists Discover The First Evidence of 4.5-billion-year-old “proto-Earth”

Scientists at MIT and elsewhere have discovered extremely rare remnants of “proto Earth,” which formed about 4.5 billion years ago, before a colossal collision irreversibly altered the primitive planet’s composition […]

Posted inAstrogeology, Astronomy & Telescopes, Comets and Asteroids, Exoplanets, -moons, -comets, Extinction events, Imaging & Spectroscopy, Impact events, Meteorites & Asteroids, Press Release, TRAPPIST-1

The Smallest Asteroids Ever Detected In The Main Belt

The asteroid that extinguished the dinosaurs is estimated to have been about 10 kilometers across. That’s about as wide as Brooklyn. Such a massive impactor is predicted to hit Earth […]

Posted inAnalog Studies, Arctic / Antarctic / Alpine, Astrogeology, Atmospheres, Climate, Weather, Biogeochemical Cycles & Geobiology, Biophysics, Biosignatures & Paleobiology, Cryobiology, Habitable Zones, Icy Worlds, Imaging & Spectroscopy, Mapping, Geodesy, Cartography, Bathymetry, Mars, Origin & Evolution of Life, Press Release, Water/Hycean Worlds & Oceanography

Liquid On Mars Was Not Necessarily All Water

Dry river channels and lake beds on Mars point to the long-ago presence of a liquid on the planet’s surface, and the minerals observed from orbit and from landers seem […]

Posted inAstrogeology, Atmospheres, Climate, Weather, Biochemistry & Organic Chemistry, Biogeochemical Cycles & Geobiology, Biosignatures & Paleobiology, Habitable Zones, Icy Worlds, Mars, Press Release, Terraforming & Geoengineering

Mars’ Missing Atmosphere Could Be Hiding In Plain Sight

Mars wasn’t always the cold desert we see today. There’s increasing evidence that water once flowed on the Red Planet’s surface, billions of years ago. And if there was water, […]

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