Observing the dayside thermal emissions of rocky exoplanets provides essential insights into their compositions and the presence of atmospheres.
astro-ph.EP]
![[LEFT] Outgoing longwave radiation of six potentially visible hemispheres of the planet. Teegarden's Star is one of the most promising targets for the first observations of LIFE, as a non-transiting rocky planet with similar bulk properties to the Earth, and a relatively quiescent M-dwarf host star. [RIGHT} Cloud fraction averaged over all pressure levels.]](https://i0.wp.com/astrobiology.com/wp-content/uploads/2025/12/Disentangling-The-Hemispheres.png?resize=1200%2C720&ssl=1)
Posted inAI - Data - Apps - Cybernetics, Atmospheres, Climate, Weather, Exoplanets, -moons, -comets, Habitable Zones, Status Report
Disentangling The Hemispheres Of Teegarden’s Star b With LIFE
We use LIFEsim, a software developed by the ETH LIFE team, along with thermal emission maps obtained from a suite of three-dimensional global climate model (GCM) simulations, to explore the […]
Posted inAtmospheres, Climate, Weather, Biochemistry & Organic Chemistry, Biogeochemical Cycles & Geobiology, Biosignatures & Paleobiology, Gaia - Planetary Perspectives, Habitable Zones, Microbiology & Virology, Status Report, Terraforming & Geoengineering, Water/Hycean Worlds & Oceanography
The Oxygen Valve on Hydrogen Escape Since the Great Oxidation Event
The Great Oxidation Event (GOE) was a 200 Myr transition circa 2.4 billion years ago that converted the Earth’s anoxic atmosphere to one where molecular oxygen (O2) was abundant (volume […]
Posted inBiosignatures & Paleobiology, Exoplanets, -moons, -comets, Habitable Zones, Imaging & Spectroscopy, Intelligence & Language, Interstellar, SETI & Technosignatures, Status Report
Projections of Earth’s Technosphere: Strategies For Observing Technosignatures On Terrestrial Exoplanets
The search for technosignatures — remotely detectable evidence of extraterrestrial technology — draws upon examples from the recent history of Earth as well as projections of Earth’s technosphere.
Posted inAstronomy & Telescopes, Atmospheres, Climate, Weather, Exoplanets, -moons, -comets, Imaging & Spectroscopy, Status Report
A Closed-Form Analytical Theory of Non-Isobaric Transmission Spectroscopy for Exoplanet Atmospheres
Analytical models are essential for building physical intuition and guiding the interpretation of exoplanet observations by clarifying the dependencies that shape atmospheric signatures.
Posted inAstronomy & Telescopes, Atmospheres, Climate, Weather, Exoplanets, -moons, -comets, Gas Giants, Status Report
Horizontal And Vertical Exoplanet Thermal Structure From A JWST Spectroscopic Eclipse Map
Highly-irradiated giant exoplanets known as “ultra-hot Jupiters” are anticipated to exhibit large variations of atmospheric temperature and chemistry as a function of longitude, latitude, and altitude.
Posted inHabitable Zones, Imaging & Spectroscopy, Origin & Evolution of Life, Radiation, Space Weather & Heliophysics, Status Report
The Impact Of Stellar Winds And Tidal Locking Effects On The Habitability Of Earth-like Exoplanets Around M Dwarf Stars
We present an assessment of the effects of stellar wind magnetic and mechanical components on the habitability of Earth-like exoplanets orbiting the inner and outer radii of the habitable zone […]
Posted inAstrochemistry, Astrogeology, Astronomy & Telescopes, Exoplanets, -moons, -comets, Icy Worlds, Imaging & Spectroscopy, Status Report
Variation Of The Disk Thickness Across Ice Bands: A Method To Determine Ice Abundances In Highly Inclined Protoplanetary Disks
The James Webb Space Telescope provides unprecedented information to study ices in protoplanetary disks.
Posted inAstronomy & Telescopes, Exoplanets, -moons, -comets, Imaging & Spectroscopy, Status Report
Predictions of the Nancy Grace Roman Space Telescope Galactic Exoplanet Survey. IV. Lens Mass and Distance Measurements
As part of the Galactic Bulge Time Domain Survey (GBTDS), the Nancy Grace Roman Galactic Exoplanet Survey (RGES) will use microlensing to discover cold outer planets and free-floating planets unbound […]
![[L] Latitude-longitude maps of surface temperature overlaid with the wind field at the bottom layer, and surface precipitation. The black contours indicate where the surface temperature is 50◦ Celsius. [R] Latitude-longitude maps of surface temperature overlaid with the wind field at the bottom layer, and surface precipitation, for ISR = 1580 Wm−2 , which brings the climate to the onset of a runaway greenhouse effect. The minimum surface temperature between the two surface albedo cases is 345 K or 72◦C.Latitude-longitude maps of surface temperature overlaid with the wind field at the bottom layer, and surface precipitation, for ISR = 1580 Wm−2 , which brings the climate to the onset of a runaway greenhouse effect. The minimum surface temperature between the two surface albedo cases is 345 K or 72◦C. -- astro-ph.EP](https://i0.wp.com/astrobiology.com/wp-content/uploads/2025/10/Near-The-Runaway.png?resize=1200%2C716&ssl=1)
Posted inAstronomy & Telescopes, Biosignatures & Paleobiology, Exoplanets, -moons, -comets, Habitable Zones, Imaging & Spectroscopy, Status Report
Near The Runaway: The Climate And Habitability Of Teegarden’s Star b
Teegarden’s Star b, a nearby terrestrial world receiving an Earth-like instellation, is a prime candidate for next-generation observatories targeting temperate exoplanets in their habitable zones.