Giant planets within the habitable zones of the closest several stars can currently be imaged with ground-based telescopes.
extrasolar
Posted inAstronomy & Telescopes, Atmospheres, Climate, Weather, Exoplanets, -moons, -comets, Habitable Zones, Imaging & Spectroscopy, Press Release
Two Temperate Earth-mass Planets Orbiting The Nearby Star GJ1002
We report the discovery and characterisation of two Earth-mass planets orbiting in the habitable zone of the nearby M-dwarf GJ~1002 based on the analysis of the radial-velocity (RV) time series […]
Posted inAtmospheres, Climate, Weather, Biogeochemical Cycles & Geobiology, Exoplanets, -moons, -comets, Habitable Zones, Press Release, TRAPPIST-1, Water/Hycean Worlds & Oceanography
Terminator Habitability: The Case For Limited Water Availability on M-dwarf Planets
Rocky planets orbiting M-dwarf stars are among the most promising and abundant astronomical targets for detecting habitable climates.
Posted inAstronomy & Telescopes, Biosignatures & Paleobiology, Exoplanets, -moons, -comets, Genomics, Proteomics, Bioinformatics, Imaging & Spectroscopy, Press Release, TRAPPIST-1
GCM Constraints On The Detectability Of The CO2-CH4 Biosignature Pair On TRAPPIST-1e With JWST
Terrestrial exoplanets such as TRAPPIST-1e will be observed in a new capacity with JWST/NIRSpec, which is expected to be able to detect CO2, CH4, and O2 signals, if present, with […]
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 inAstrogeology, Extinction events, Press Release
The Nominal Range of Rocky Planet Masses, Radii, Surface Gravities and Bulk Densities
The two primary observable quantities of an exoplanet–its mass and radius–alone are not sufficient to probe a rocky exoplanet’s interior composition and mineralogy.
Posted inAtmospheres, Climate, Weather, Biogeochemical Cycles & Geobiology, Exoplanets, -moons, -comets, Habitable Zones, Icy Worlds, Press Release, Water/Hycean Worlds & Oceanography
Liquid Water On Cold Exo-Earths Via Basal Melting Of Ice Sheets
Liquid water is a critical component of habitability. However, the production and stability of surficial liquid water can be challenging on planets outside the Habitable Zone and devoid of adequate […]
Posted inAstronomy & Telescopes, Exoplanets, -moons, -comets, Imaging & Spectroscopy, Press Release
Search For Planets Around Stars With Wide Brown Dwarfs
Aims. The project aims to understand better the role of wide brown dwarf companions on planetary systems.
Posted inAstronomy & Telescopes, Exoplanets, -moons, -comets, Imaging & Spectroscopy, Press Release
The CARMENES Search For Exoplanets Around M Dwarfs. Variability On Long Timescales As Seen In Chromospheric Indicators
It is clearly established that the Sun has an 11-year cycle that is caused by its internal magnetic field. This cycle is also observed in a sample of M dwarfs.
Posted inAstrochemistry, Biosignatures & Paleobiology, Exoplanets, -moons, -comets, Press Release
Water And An Escaping Helium Tail Detected In The Hazy And Methane-depleted Atmosphere Of HAT-P-18b From JWST NIRISS/SOSS
JWST is here. The early release observation program (ERO) provides us with the first look at the scientific data and the spectral capabilities.