The chemical compositions of Earth’s core and mantle provide insight into the processes that led to their formation. N-body simulations, on the other hand, generally do not contain chemical information, […]
Earth
Posted inExoplanets, -moons, -comets, Habitable Zones, Status Report
The Dynamical Consequences Of A Super-Earth In The Solar System
Placing the architecture of the Solar System within the broader context of planetary architectures is one of the primary topics of interest within planetary science. Exoplanet discoveries have revealed a […]
Posted inExoplanets, -moons, -comets, Habitable Zones, Press Release, Venus
The Demographics Of Terrestrial Planets In The Venus Zone
Understanding the physical characteristics of Venus, including its atmosphere, interior, and its evolutionary pathway with respect to Earth, remains a vital component for terrestrial planet evolution models and the emergence […]
Posted inAstrochemistry, Astrogeology, Comets and Asteroids, Jupiter, Meteorites & Asteroids, Status Report, Water/Hycean Worlds & Oceanography
Early Water Delivery To Terrestrial Planet Regions During The Stages Of Jupiter’s Formation And Migration In The Grand Tack Model
The formation and subsequent migration of gas giants could significantly affect the material mixing in the Solar System.
Posted inAstronomy & Telescopes, Atmospheres, Climate, Weather, Exoplanets, -moons, -comets, Imaging & Spectroscopy, Status Report, Venus
From Exo-Earths To Exo-Venuses – Flux And Polarization Signatures Of Reflected Light
Terrestrial exoplanets in habitable zones are ubiquitous. It is, however, unknown which have Earth-like or Venus-like climates.
Posted inAstrochemistry, Astrogeology, Meteorites & Asteroids, Press Release
Two Studies Of Volatile Elements Discovered In Meteorites Constrain The Assembly Of Earth
In two separate studies, researchers identify nucleosynthetic isotope anomalies in the volatile elements potassium (K) and zinc (Zn) in meteorites, which constrain the origins of the material that formed Earth.
Posted inAstrogeology, Atmospheres, Climate, Weather, Biogeochemical Cycles & Geobiology, Habitable Zones, Press Release
Earth’s Geological Thermostat: How Temperature-dependent Silicate Weathering Helps Steer The Planet’s Climate
The process of minerals in rocks being chemically broken down, or weathered – which plays a crucial role in controlling Earth’s climate – removes less carbon dioxide (CO2) if temperatures […]
Posted inAstrogeology, Biogeochemical Cycles & Geobiology, Biosignatures & Paleobiology, Enceladus, Europa, Ganymede, Icy Worlds, Mars, Missions & Hardware, Press Release, Water/Hycean Worlds & Oceanography
Enabling Ice Core Science On Mars And Ocean Worlds
Ice deposits on Earth provide an extended record of volcanism, planetary climate, and life.
Posted inAtmospheres, Climate, Weather, Biogeochemical Cycles & Geobiology, Habitable Zones, Press Release
Early Earth Forests Did Not Significantly Change Atmospheric CO2
Scientists have discovered that the atmosphere contained far less CO2 than previously thought when forests emerged on our planet, the new study has important implications for understanding how land plants […]
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.