The abundance and biological role of potassium suggest that its unstable nuclide was present in all stages of terrestrial biogenesis.
astro-ph.EP
Posted inExoplanets, -moons, -comets, Habitable Zones, Press Release, Space Weather & Heliophysics, TRAPPIST-1
3D Modelling Of The Impact Of Stellar Activity On Tidally Locked Terrestrial Exoplanets: Atmospheric Composition And Habitability
Stellar flares present challenges to the potential habitability of terrestrial planets orbiting M dwarf stars through inducing changes in the atmospheric composition and irradiating the planet’s surface in large amounts […]
Posted inAstrochemistry, Astrogeology, Press Release, Titan
Molecular Structure, Dynamics, and Vibrational Spectroscopy of the Acetylene:Ammonia (1:1) Plastic Co-Crystal at Titan Conditions
The Saturnian moon Titan has a thick, organic-rich atmosphere, and condensed phases of small organic molecules are anticipated to be stable on its surface.
Posted inAstronomy & Telescopes, Exoplanets, -moons, -comets, Habitable Zones, Imaging & Spectroscopy, Press Release
Ground-based Optical Transmission Spectroscopy of the Nearby Terrestrial Exoplanet LTT 1445Ab
Nearby M dwarf systems currently offer the most favorable opportunities for spectroscopic investigations of terrestrial exoplanet atmospheres.
Posted inAstrogeology, Exoplanets, -moons, -comets, Impact events, Press Release
The Effect Of Collisional Erosion On The Composition Of Earth-analog Planets In Grand Tack models: Implications For The Formation Of The Earth
Impact-induced erosion of the Earth’s early crust during accretion of terrestrial bodies can significantly modify the primordial chemical composition of the Bulk Silicate Earth (BSE, that is, the composition of […]
Posted inPress Release, Radiation, Space Weather & Heliophysics, TRAPPIST-1
Lower-than-expected Flare Temperatures For TRAPPIST-1
Although high energetic radiation from flares is a potential threat to exoplanet atmospheres and may lead to surface sterilization, it might also provide the extra energy for low-mass stars needed […]
Posted inExoplanets, -moons, -comets, Press Release, Radiation, Space Weather & Heliophysics
First Millimeter Flares Detected from Epsilon Eridani with ALMA
We report the detection of three large millimeter flaring events from the nearby Sun-like, ϵ Eridani, found in archival ALMA 12m and ACA observations at 1.33 mm taken from 2015 […]
Posted inAstronomy & Telescopes, Exoplanets, -moons, -comets, Press Release
TFAW survey II: 6 Newly Validated Planets And 13 Planet Candidates From K2
Searching for Earth-sized planets in data from Kepler’s extended mission (K2) is a niche that still remains to be fully exploited.
Posted inAstronomy & Telescopes, Exoplanets, -moons, -comets, Habitable Zones, Imaging & Spectroscopy, Press Release
Hubble WFC3 Spectroscopy of the Rocky Planet L 98-59 b: No Evidence for a Cloud-Free Primordial Atmosphere
We are using archived data from HST of transiting exoplanet L~98-59~b to place constraints on its potentially hot atmosphere.
Posted inAstronomy & Telescopes, Exoplanets, -moons, -comets, Habitable Zones, Imaging & Spectroscopy, Press Release
A Transmission Spectrum Of The Sub-Earth Planet L98-59~b In 1.1-1.7 μm
With the increasing number of planets discovered by TESS, the atmospheric characterization of small exoplanets is accelerating. L98-59 is a M-dwarf hosting a multi-planet system, and so far, four small […]