![[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)
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 […]
Teegarden's Star-b
Posted inAstronomy & Telescopes, Atmospheres, Climate, Weather, Biosignatures & Paleobiology, Exoplanets, -moons, -comets, Habitable Zones, Imaging & Spectroscopy, Press Release, Water/Hycean Worlds & Oceanography
Probing Thermal Gradients Of Habitable-zone Rocky Planets Using Direct Imaging As An Anti-indicator Of A Global Surface Ocean
Future direct-imaging missions, such as the Large Interferometer for Exoplanets (LIFE), aim to observe thermal emission from potentially habitable planets to characterize their surface environments and search for signs of […]
![[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.
![Spectral flux contributions over the range [1, 25] µm for a surface temperature of (Top) 250 K and (Bottom) 650 K. The white lines delineate the areas where the CFF per spectral band is higher than unity. The spectral range of LIFE and the vertical extent of the cloud are overplotted. -- astro-ph.EP](https://i0.wp.com/astrobiology.com/wp-content/uploads/2024/11/The-Impact-Of-Water-Clouds-On.png?resize=1200%2C716&ssl=1)
Posted inAstronomy & Telescopes, Atmospheres, Climate, Weather, Biochemistry & Organic Chemistry, Biogeochemical Cycles & Geobiology, Biosignatures & Paleobiology, Exoplanets, -moons, -comets, Imaging & Spectroscopy, Status Report
The Impact Of Water Clouds On The Prospective Emission Spectrum Of Teegarden’s Star b As Observed By LIFE
Non-transiting terrestrial planets will be accessible by upcoming observatories of which LIFE is an example.
Posted inExoplanets, -moons, -comets, Habitable Zones, Status Report
Teegarden’s Star Revisited: A Nearby Planetary System With At Least Three Planets
The two known planets in the planetary system of Teegarden’s Star are among the most Earth-like exoplanets currently known. Revisiting this nearby planetary system with two planets in the habitable […]
Posted inAstronomy & Telescopes, Atmospheres, Climate, Weather, Exoplanets, -moons, -comets, Habitable Zones, Imaging & Spectroscopy, Status Report
New Models of Reflection Spectra for Terrestrial Exoplanets: Present and Prebiotic Earth Orbiting Around Stars of Different Spectral Types
In order to recognize a habitable exoplanet from future observed spectra, we present new model reflected spectra and geometric albedo for modern and prebiotic (3.9 Ga) Earth-like exoplanets orbiting within […]