Researchers supported by NASA have used a model to predict the concentration of nitrous oxide (N2O) in the atmosphere of planets over a range of conditions. On Earth, N2O can […]
TRAPPIST-1
Posted inBiosignatures & Paleobiology, Exoplanets, -moons, -comets, Habitable Zones, Imaging & Spectroscopy, Plant Biology, Press Release, TRAPPIST-1
Photosynthetic Fluorescence From Earth-Like Planets Around Sun-Like Aand Cool Stars
Remote sensing of the Earth has demonstrated that photosynthesis is traceable as the vegetation red edge (VRE), which is the steep rise in the reflection spectrum of vegetation, and as […]
Posted inAstronomy & Telescopes, Exoplanets, -moons, -comets, Habitable Zones, Press Release, TRAPPIST-1
The Search for Habitable, Earth-Sized Planets around SPECULOOS-2
In a new paper, NASA-supported scientists have predicted that there is an Earth-sized planet in the habitable zone of the star SPECULOOS-2.
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 inAlpha Centauri, Exoplanets, -moons, -comets, Habitable Zones, Press Release, Proxima Centauri, Space Weather & Heliophysics, TRAPPIST-1
Stellar Space Weather Effects On Potentially Habitable Planets
Stellar activity can reveal itself in the form of radiation (eg, enhanced X-ray coronal emission, flares) and particles (eg, winds, coronal mass ejections). Together, these phenomena shape the space weather […]
Posted inAstronomy & Telescopes, Exoplanets, -moons, -comets, Imaging & Spectroscopy, Press Release, TRAPPIST-1
Measuring The Obliquities Of The TRAPPIST-1 Planets With MAROON-X
A star’s obliquity with respect to its planetary system can provide us with insight into the system’s formation and evolution, as well as hinting at the presence of additional objects […]
Posted inAstronomy & Telescopes, Atmospheres, Climate, Weather, Exoplanets, -moons, -comets, Press Release, Proxima Centauri, TRAPPIST-1, Water/Hycean Worlds & Oceanography
Traveling Planetary-scale Waves Cause Cloud Variability On Tidally Locked Aquaplanets
Cloud cover at the planetary limb of water-rich Earth-like planets is likely to weaken chemical signatures in transmission spectra, impeding attempts to characterize these atmospheres.
Posted inAstrogeology, Exoplanets, -moons, -comets, Habitable Zones, Press Release, Space Weather & Heliophysics, TRAPPIST-1
Interior Heating Of Rocky Exoplanets From Stellar Flares With Application To TRAPPIST-1
Many stars of different spectral types with planets in the habitable zone are known to emit flares.
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.