The properties of the atmospheres of the exoplanets depend on several interconnected parameters, making it difficult to determine them.
extrasolar
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 inAriel Mission, Exoplanets, -moons, -comets, Habitable Zones, Imaging & Spectroscopy, Press Release
Exploring the Ability of HST WFC3 G141 to Uncover Trends in Populations of Exoplanet Atmospheres Through a Homogeneous Transmission Survey of 70 Gaseous Planets
We present the analysis of the atmospheres of 70 gaseous extrasolar planets via transit spectroscopy with Hubble’s Wide Field Camera 3 (WFC3).
Posted inExoplanets, -moons, -comets, Habitable Zones, Press Release
HD 191939 Revisited: New And Refined Planet Mass Determinations, And A New Planet In The Habitable Zone
HD 191939 (TOI-1339) is a nearby (d=54pc), bright (V=9mag), and inactive Sun-like star (G9 V) known to host a multi-planet transiting system. Ground-based spectroscopic observations confirmed the planetary nature of […]
Posted inAstrochemistry, Astrogeology, Atmospheres, Climate, Weather, Exoplanets, -moons, -comets, Press Release
A Chemical Modelling Roadmap Linking Protoplanetary Disks and Exoplanet Atmospheres
This review paper discussed which chemical effects may be at play in a planet-forming disk midplane, which effects are relevant under different conditions, and which tools are available for modelling […]
Posted inAstronomy & Telescopes, Exoplanets, -moons, -comets, Habitable Zones, Imaging & Spectroscopy, Press Release
Broadband Vortex Fiber Nulling: High-dispersion Exoplanet Science At The Diffraction Limit
As the number of confirmed exoplanets continues to grow, there is an increased push to spectrally characterize them to determine their atmospheric composition, formation paths, rotation rates, and habitability.
Posted inExoplanets, -moons, -comets, Habitable Zones, Press Release, Space Weather & Heliophysics, TRAPPIST-1
Extending Optical Flare Models to the UV: Results from Comparing of TESS and GALEX Flare Observations For M Dwarfs
The ultraviolet (UV) emission of stellar flares may have a pivotal role in the habitability of rocky exoplanets around low-mass stars.
Posted inExoplanets, -moons, -comets, Habitable Zones, Press Release, SETI & Technosignatures
Galactic Settlement Of Low-mass Stars As A Resolution To The Fermi Paradox
An expanding civilization could rapidly spread through the galaxy, so the absence of extraterrestrial settlement in the solar system implies that such expansionist civilizations do not exist.
Posted inAtmospheres, Climate, Weather, Biogeochemical Cycles & Geobiology, Exoplanets, -moons, -comets, Habitable Zones, Press Release, TRAPPIST-1
A Discovery That Could Dramatically Narrow The Search For Extraterrestrial Life
An Earth-like planet orbiting an M dwarf — the most common type of star in the universe — appears to have no atmosphere at all. This discovery could cause a […]
Posted inExoplanets, -moons, -comets, Habitable Zones, Press Release, Space Weather & Heliophysics, TRAPPIST-1
3D Modelling Of The Impact Of Stellar Activity On Tidally Locked Terrestrial Exoplanets: Atmospheric Composition And Habitability
Stellar flares present challenges to the potential habitability of terrestrial planets orbiting M dwarf stars through inducing changes in the atmospheric composition and irradiating the planet’s surface in large amounts […]