Several billion years ago, the oceans were probably not as hot as often assumed, but were instead at much more moderate temperatures.
geology
Posted inAstrochemistry, Astrogeology, Biochemistry & Organic Chemistry, Biogeochemical Cycles & Geobiology, Origin & Evolution of Life, Press Release
Earth’s Inner Core May Be Oxygen-Rich
Oxygen is the key substance for life and one of the most abundant elements in the Earth.
Posted inAstrogeology, Extinction events, Press Release
The Nominal Range of Rocky Planet Masses, Radii, Surface Gravities and Bulk Densities
The two primary observable quantities of an exoplanet–its mass and radius–alone are not sufficient to probe a rocky exoplanet’s interior composition and mineralogy.
Posted inAstrogeology, Exoplanets, -moons, -comets, Habitable Zones, Press Release
Plausible Constraints On The Range of Bulk Terrestrial Exoplanet Compositions in the Solar Neighbourhood
Rocky planet compositions regulate planetary evolution by affecting core sizes, mantle properties, and melting behaviours.
Posted inAstrogeology, Biogeochemical Cycles & Geobiology, Habitable Zones, Press Release
Laying The Geological Groundwork For Life On Earth
New research analyzing pieces of the most ancient rocks on the planet adds some of the sharpest evidence yet that Earth’s crust was pushing and pulling in a manner similar […]
Posted inAstrogeology, Biogeochemical Cycles & Geobiology, Exoplanets, -moons, -comets, Lava / magma ocean / Volcanic Worlds, Press Release
Internal Or External Magma Oceans In The Earliest Protoplanets — Perspectives From Nitrogen And Carbon Fractionation
When the extent of protoplanetary melting approached magma ocean (MO)-like conditions, alloy melts efficiently segregated from the silicates to form metallic cores.
Posted inAstrochemistry, Astrogeology, Icy Worlds, Press Release
Material Properties Of Organic Liquids, Ices, And Hazes On Titan
Titan has a diverse range of materials in its atmosphere and on its surface: the simple organics that reside in various phases (gas, liquid, ice) and the solid complex refractory […]
Posted inAstrogeology, Press Release, Water/Hycean Worlds & Oceanography
An Ocean Inside Earth? There Is Water Hundreds Of Kilometers Down
The transition zone between the Earth’s upper and lower mantle contains considerable quantities of water, according to an international study involving the Institute for Geosciences at Goethe University in Frankfurt.
Posted inBiogeochemical Cycles & Geobiology, Biosignatures & Paleobiology, Imaging & Spectroscopy, Mars, Press Release
Perseverance Rover Conducts Astrobiology And Geology Exploration On Mars
NASA’s Perseverance rover is well into its second science campaign, collecting rock-core samples from features within an area long considered by scientists to be a top prospect for finding signs […]
Posted inBiogeochemical Cycles & Geobiology, Fossils & Paleontology, Origin & Evolution of Life, Plant Biology, Press Release, Terraforming & Geoengineering
Land Plants Changed Earth’s Composition
Scientists at the University of Southampton have discovered that the evolution of land plants caused a sudden shift in the composition of Earth’s continents. The Southampton researchers, led by Dr […]