Photochemical hazes are suspected to obscure molecular features, such as water, from detection in the transmission spectra of exoplanets with atmospheric temperatures < 800 K.
extrasolar
Posted inBiogeochemical Cycles & Geobiology, Biosignatures & Paleobiology, Exoplanets, -moons, -comets, Habitable Zones, Press Release
The Abundance of Belatedly Habitable Planets And Ambiguities In Definitions Of The Continuously Habitable Zone
A planet’s history dictates its current potential to host habitable conditions and life. The concept of the Continuously Habitable Zone (CHZ) has been used to define the region around a […]
Posted inAtmospheres, Climate, Weather, Biogeochemical Cycles & Geobiology, Biosignatures & Paleobiology, Exoplanets, -moons, -comets, Habitable Zones, Press Release, Water/Hycean Worlds & Oceanography
Redox State And Interior Structure Control On The Long-term Habitability Of Stagnant-lid Planets
A major goal in the search for extraterrestrial life is the detection of liquid water on the surface of exoplanets.
Posted inBiosignatures & Paleobiology, Exoplanets, -moons, -comets, Press Release
A Rocky Exoplanet Classification Method And Its Application To Calculating Surface Pressure And Surface Temperature
With over 5,000 exoplanets currently detected, there is a need for a primary classification method to prioritise candidates for biosignature observations.
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 inAstronomy & Telescopes, Exoplanets, -moons, -comets, Habitable Zones, Imaging & Spectroscopy, Press Release
TESS Discovers TOI 700 Planetary System’s Second Earth-Sized World
Using data from NASA’s Transiting Exoplanet Survey Satellite, scientists have identified an Earth-size world, called TOI 700 e, orbiting within the habitable zone of its star – the range of […]
Posted inExoplanets, -moons, -comets, Habitable Zones, Press Release
A Gaian Habitable Zone
When searching for inhabited exoplanets, understanding the boundaries of the habitable zone around the parent star is key.
Posted inAstrogeology, Atmospheres, Climate, Weather, Biogeochemical Cycles & Geobiology, Exoplanets, -moons, -comets, Press Release, Water/Hycean Worlds & Oceanography
Diverse Carbonates In Exoplanet Oceans Promote The Carbon Cycle
Carbonate precipitation in oceans is essential for the carbonate-silicate cycle (inorganic carbon cycle) to maintain temperate climates.
Posted inAtmospheres, Climate, Weather, Exoplanets, -moons, -comets, Habitable Zones, Imaging & Spectroscopy, Press Release
The CARMENES Search For Exoplanets Around M Dwarfs, Wolf 1069 b: Earth-mass Planet In The Habitable Zone Of A Nearby, Very Low-mass Star
We present the discovery of an Earth-mass planet (Mbsini=1.36±0.21M⊕) on a 15.6d orbit of a relatively nearby (d∼9.6pc) and low-mass (0.167±0.011M⊙) M5.0V star, Wolf 1069.
Posted inAstronomy & Telescopes, Biosignatures & Paleobiology, Exoplanets, -moons, -comets, Imaging & Spectroscopy, Press Release
In Search of the Edge: A Bayesian Exploration of the Detectability of Red Edges in Exoplanet Reflection Spectra
Reflection spectroscopy holds great promise for characterizing the atmospheres and surfaces of potentially habitable terrestrial exoplanets.