Retrieving the physical parameters from spectroscopic observations of exoplanets is key to understanding their atmospheric properties.
atmosphere
Posted inAstrogeology, Atmospheres, Climate, Weather, Biogeochemical Cycles & Geobiology, Caves, Craters, Mountains, Subsurface, Lava Tubes, Exoplanets, -moons, -comets, Status Report
Redox Evolution Of The Crystallizing Terrestrial Magma Ocean And Its Influence On Atmosphere Outgassing
Magma oceans are episodes of large-scale melting of the mantle of terrestrial planets.
Posted inAstrogeology, Atmospheres, Climate, Weather, Biogeochemical Cycles & Geobiology, Ganymede, Habitable Zones, Icy Worlds, Imaging & Spectroscopy, Status Report
Probing Ganymede’s Atmosphere With HST Lyα Images In Transit Of Jupiter
We report results from far-ultraviolet observations by the Hubble Space Telescope of Jupiter’s largest moon Ganymede transiting across the planet’s dayside hemisphere.
Posted inAtmospheres, Climate, Weather, Biogeochemical Cycles & Geobiology, Exoplanets, -moons, -comets, Imaging & Spectroscopy, Press Release
Webb Discovers LHS 475 b, An Earth-Sized, Rocky Planet
Researchers have confirmed the presence of an exoplanet, a planet that orbits another star, using the NASA/ESA/CSA James Webb Space Telescope for the first time. Formally classified as LHS 475 […]
Posted inAtmospheres, Climate, Weather, Biosignatures & Paleobiology, Exoplanets, -moons, -comets, Habitable Zones, Imaging & Spectroscopy, Status Report
A JWST Transmission Spectrum Of A Nearby Earth-sized Exoplanet
The critical first step in the search for life on exoplanets over the next decade is to determine whether rocky planets transiting small M-dwarf stars possess atmospheres and, if so, […]
Posted inAtmospheres, Climate, Weather, Biogeochemical Cycles & Geobiology, Biosignatures & Paleobiology, Exoplanets, -moons, -comets, Habitable Zones, Imaging & Spectroscopy, Press Release
Photochemical Hazes Can Trace The C/O Ratio In Exoplanet Atmospheres
Photochemical hazes are suspected to obscure molecular features, such as water, from detection in the transmission spectra of exoplanets with atmospheric temperatures < 800 K.
Posted inAstrochemistry, Astronomy & Telescopes, Atmospheres, Climate, Weather, Biosignatures & Paleobiology, Exoplanets, -moons, -comets, Imaging & Spectroscopy, Press Release
Optical Properties Of Organic Hazes In Water-rich Exoplanet Atmospheres: Implications For Observations With JWST
JWST has begun its scientific mission, which includes the atmospheric characterization of transiting exoplanets.
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 inAtmospheres, Climate, Weather, Exoplanets, -moons, -comets, Habitable Zones, Imaging & Spectroscopy, Press Release
On The Application of Bayesian Leave-One-Out Cross-Validation to Exoplanet Atmospheric Analysis
Over the last decade, exoplanetary transmission spectra have yielded an unprecedented understanding about the physical and chemical nature of planets outside our solar system. Physical and chemical knowledge is mainly […]
Posted inAstronomy & Telescopes, Biogeochemical Cycles & Geobiology, Biosignatures & Paleobiology, Icy Worlds, Imaging & Spectroscopy, Press Release, Saturn, Titan
Webb Tracks Clouds On Saturn’s Moon Titan
These are images of Saturn’s moon Titan, captured by the NASA/ESA/CSA James Webb Space Telescope’s NIRCam instrument on 4 November 2022.