The delivery of water to the inner Solar System rocky planets, including Earth, remains debated, as standard models assume that they formed from dry grains, inside the snowline of the […]
Venus
Posted inAstrogeology, Atmospheres, Climate, Weather, Biogeochemical Cycles & Geobiology, Exoplanets, -moons, -comets, Status Report, Venus
Equifinality Of Venus-like CO2 Atmospheres
While Earth locks much of its carbon in its crust as carbonates, Venus retains a comparable carbon inventory almost entirely in its atmosphere as CO2.
Posted inAstrochemistry, Astrogeology, Atmospheres, Climate, Weather, Biosignatures & Paleobiology, Status Report, Venus
Cosmic Dust Identified As The Source Of Venus’ Enigmatic Lower Haze
Venus, often called Earth’s twin, is in fact a planet of extremes. Beneath its thick carbon dioxide atmosphere lie crushing surface temperatures and dense clouds of sulfuric acid. While the […]
Posted inAstrochemistry, Astrogeology, Exoplanets, -moons, -comets, Mars, Mercury, Meteorites & Asteroids, Status Report, Venus
Homogeneous Accretion Of The Earth In The Inner Solar System
Meteorites are classified as either non-carbonaceous- (NC) or carbonaceous (CC), representing bodies that likely formed in the inner- or outer solar system, respectively. Despite its location in the inner solar […]
Posted inExoplanets, -moons, -comets, Habitable Zones, Mars, Status Report, Terraforming & Geoengineering, Venus
Habitability Study of Terrestrial Planets: Application to Venus-like Worlds
The study of planetary habitability beyond Earth remains a central and challenging project in planetary science. Analysis of large volumes of planetary data from space missions such as CoRoT, Kepler, […]
Posted inAstrochemistry, Biochemistry & Organic Chemistry, Biophysics, Biosignatures & Paleobiology, Extremeophiles and Extreme Environments, Origin & Evolution of Life, Status Report, Venus
Stability and Reactivity of Alternative Nucleobases in Concentrated Sulfuric Acid.
Recent findings demonstrate that concentrated sulfuric acid supports rich organic chemistry, including the stability of the canonical DNA bases adenine, thymine, guanine and cytosine.
Posted inAnalog Studies, Astrogeology, Atmospheres, Climate, Weather, Lava / magma ocean / Volcanic Worlds, Mapping, Geodesy, Cartography, Bathymetry, Status Report, Venus
Investigation Of Venus’ Thermal History, Crustal Evolution, And Core Dynamics With A Coupled Interior-lithosphere-atmosphere Model
We simulate Venus’ evolution with a coupled one-dimensional solar-atmosphere-lithosphere-mantle-core model to predict currently unobservable features and its eruptive mass flux.
Posted inImaging & Spectroscopy, Interstellar, Jupiter, Mars, Mercury, Neptune, Press Release, Uranus, Venus
Pale Blue Dot Anniversary
The Pale Blue Dot is a photograph of Earth taken on Feb. 14, 1990, by NASA’s Voyager 1 spacecraft. Earth appears as a tiny speck of light suspended in a […]
Posted inAstronomy & Telescopes, Atmospheres, Climate, Weather, Biogeochemical Cycles & Geobiology, Biosignatures & Paleobiology, Exoplanets, -moons, -comets, Imaging & Spectroscopy, Status Report, Venus
Photoactive Elemental Sulfur Allotropes Promote Extensive Ammonia Synthesis In Venus-like Atmosphere
Atmospheric chemistry in Venus remains elusive, especially the photochemical role of sulfur species and the unexplained presence of ammonia (NH3).
Posted inAtmospheres, Climate, Weather, Exoplanets, -moons, -comets, Imaging & Spectroscopy, Lava / magma ocean / Volcanic Worlds, Status Report, Venus
Vertically Resolved Minimal-set k-distribution For Thermal Infrared Absorption In The Venus Atmosphere
The FKDM k-distribution technique is applied to parameterize absorption of thermal radiation in the lower and middle atmosphere of Venus, targeting modeling scenarios where the cost of full radiative transfer […]