The Maximum Eccentricity Method (MEM) is a standard tool for the analysis of planetary systems and their stability. The method amounts to estimating the maximal stretch of orbits over sampled […]
extrasolar
Posted inExoplanets, -moons, -comets, Imaging & Spectroscopy, Press Release, Titan
Life On Titan May Signal Early Life In The Universe
The temperature of the cosmic microwave background (CMB) was equal to the surface temperature of Saturn’s moon Titan, 94K, at a redshift z=33.5, after the first galaxies formed.
Posted inAstrogeology, Atmospheres, Climate, Weather, Biogeochemical Cycles & Geobiology, Exoplanets, -moons, -comets, Lava / magma ocean / Volcanic Worlds, Status Report
Solubility Of Water In Peridotite Liquids And The Prevalence Of Steam Atmospheres On Rocky Planets
Atmospheres are products of time-integrated mass exchange between the surface of a planet and its interior. On Earth and other planetary bodies, magma oceans likely marked significant atmosphere-forming events, during […]
Posted inExoplanets, -moons, -comets, Habitable Zones, Press Release, Proxima Centauri, Space Weather & Heliophysics
Revisiting The Space Weather Environment Of Proxima Centauri b
Close-in planets orbiting around low-mass stars are exposed to intense energetic photon and particle radiation and harsh space weather.
Posted inExoplanets, -moons, -comets, Press Release
SPY-NACO Imaging Survey for Planets around Young stars. The Demographics of Forming Planets Embedded in Protoplanetary Disks
We present the statistical analysis of a subsample of 45 young stars surrounded by protoplanetary disks (PPDs). This is the largest imaging survey uniquely focused on PPDs to date.
Posted inAstronomy & Telescopes, Biosignatures & Paleobiology, Habitable Zones, Imaging & Spectroscopy, Press Release, Reports, Roadmaps, & Plans
Congressional Testimony By Natalie Batalha: Early Science Results for Transiting Exoplanets Observed by JWST
JWST is ushering in a new epoch of exoplanet science that will rewrite textbooks. Progress will stem largely from the characterization of exoplanet atmospheres enabled by JWST technology. Herein, I […]
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 inAstronomy & Telescopes, Biosignatures & Paleobiology, Exoplanets, -moons, -comets, Imaging & Spectroscopy, Press Release
JWST Hot Gas Giant Exoplanet WASP-39 b Atmospheric Composition (NIRSpec PRISM)
The atmospheric composition of the hot gas giant exoplanet WASP-39 b has been revealed by the NASA/ESA/CSA James Webb Space Telescope.
Posted inAstronomy & Telescopes, Biosignatures & Paleobiology, Exoplanets, -moons, -comets, Imaging & Spectroscopy, Press Release
JWST Hot Gas Giant Exoplanet WASP-39 b Atmospheric Composition (NIRSpec G395H)
The atmospheric composition of the hot gas giant exoplanet WASP-39 b has been revealed by the NASA/ESA/CSA James Webb Space Telescope.
Posted inAstronomy & Telescopes, Biosignatures & Paleobiology, Exoplanets, -moons, -comets, Imaging & Spectroscopy, Press Release
JWST Hot Gas Giant Exoplanet WASP-39 b Atmospheric Composition (NIRCam)
The atmospheric composition of the hot gas giant exoplanet WASP-39 b has been revealed by the NASA/ESA/CSA James Webb Space Telescope.