New astronomical measurements in the infrared range have led to the identification of a heretofore unknown class of asteroids
astrogeology
Posted inAstrochemistry, Astrogeology, Exoplanets, -moons, -comets, Status Report
Takeout And Delivery: Erasing The Dusty Signature Of Late-stage Terrestrial Planet Formation
The formation of planets like Earth is expected to conclude with a series of late-stage giant impacts that generate warm dusty debris, the most anticipated visible signpost of terrestrial planet […]
Posted inAstrogeology, Exoplanets, -moons, -comets, Habitable Zones, Icy Worlds, Press Release, Water/Hycean Worlds & Oceanography
How Do Rocky Planets Really Form?
A new theory for how rocky planets form could explain the origin of so-called “super-Earths”—a class of exoplanets a few times more massive than the Earth that are the most […]
Posted inAstrogeology, Biogeochemical Cycles & Geobiology, Habitable Zones, Press Release
Sedimentary Rock Chert Records Cooling Of Earth Over Billions Of Years
Several billion years ago, the oceans were probably not as hot as often assumed, but were instead at much more moderate temperatures.
Posted inAstrogeology, Biogeochemical Cycles & Geobiology, Biosignatures & Paleobiology, Exoplanets, -moons, -comets, Press Release
A Catalog Of Earth’s Minerals Will Inform Models Of Life’s History And Extraterrestrial life
A 15-year study led by the Carnegie Institution for Science details the origins and diversity of every known mineral on Earth, a landmark body of work that will help reconstruct […]
Posted inAstrochemistry, Astrogeology, Meteorites & Asteroids, Press Release
Meteorite Petrology Versus Genetics: Toward A Unified Binominal Classification
The current meteorite taxonomy, a result of two centuries of meteorite research and tradition, entangles textural and genetic terms in a less than consistent fashion, with some taxa (like shergottites) […]
Posted inAstrochemistry, Astrogeology, Exoplanets, -moons, -comets, Press Release
The Molecular Composition Of Shadowed Protosolar Disk Midplanes Beyond The Water Snowline
Image: Pie charts of the percentage contributions of the dominant carbon-bearing molecules to the total elemental carbon abundance (= 1.4 × 10−4 , top panels), the dominant oxygen-bearing molecules to […]
Posted inAstrogeology
Planet Formation Theory In The Era Of ALMA And Kepler: From Pebbles To Exoplanets
Our understanding of planet formation has been rapidly evolving in recent years. The classical planet formation theory, developed when the only known planetary system was our own Solar System, has […]
Posted inAstrogeology
Internal Structure and Magnetic Moment of Rocky Planets. Application To The First Exoplanets Discovered By TESS
For a planet to be considered habitable on its surface, it is an important advantage for it to have a magnetic field that protects its atmosphere from stellar winds as […]
Posted inAstrogeology
The Metal-Silicate Partitioning Of Carbon During Earth's Accretion And Its Distribution In The Early Solar System
Carbon is an essential element for the existence and evolution of life on Earth. Its abundance in Earth’s crust and mantle (the Bulk Silicate Earth, BSE) is surprisingly high given […]