Almost 320 light-years away in the Libra constellation lies WASP-189b, an exoplanet known as an ultra-hot Jupiter (UHJ). UHJs have temperatures high enough to vaporize rock-forming elements like magnesium (Mg), […]
Terrestrial Planet
Posted inAstronomy & Telescopes, Exoplanets, -moons, -comets, Imaging & Spectroscopy, Status Report
A Century of Radial Velocity and Astrometric Monitoring of 70 Oph AB: New PFS Data and Constraints on Planetary Companions
At a distance of 5.1 pc, the 70 Oph AB binary star system is one of the most favorable targets for future direct imaging and astrometry missions surveying mature, terrestrial […]
Posted inAstronomy & Telescopes, Exoplanets, -moons, -comets, Imaging & Spectroscopy, Status Report
Exoplanet Transit Search At The Detection Limit: Detection And False Alarm Vetting Pipeline
One of the primary mission goals of the Kepler space telescope was to detect Earth-like terrestrial planets in the habitable zone around Sun-like stars. These planets are at the detection […]
Posted inAstronomy & Telescopes, Exoplanets, -moons, -comets, Imaging & Spectroscopy, Status Report
Characterization Of Two New Transiting Sub-Neptunes And A Terrestrial Planet Around M-dwarf Hosts
We report the confirmation of three transiting exoplanets orbiting TOI-1243 (LSPM~J0902+7138), TOI-4529 (G~2–21), and TOI-5388 (Wolf~346) that were initially detected by TESS through ground-based photometry and radial velocity follow-up measurements […]
Posted inAstrogeology, Exoplanets, -moons, -comets, Status Report
Formation Of Multi-planetary Systems Via Pebble Accretion In Externally Photoevaporating Discs In Stellar Clusters
In this paper, we investigate how external photo-evaporation influences the formation, dynamical evolution and the resultant planetary architecture of multi-planet systems born in stellar clusters.
Posted inAstrogeology, Exoplanets, -moons, -comets, Habitable Zones, Press Release
Two-source Terrestrial Planet Formation With A Sweeping Secular Resonance
The models that most successfully reproduce the orbital architecture of the Solar System terrestrial planets start from a narrow annulus of material that grows into embryos and then planets.
Posted inAstrochemistry, Astrogeology, Atmospheres, Climate, Weather, Biogeochemical Cycles & Geobiology, Biosignatures & Paleobiology, Exoplanets, -moons, -comets, Imaging & Spectroscopy, Interstellar, Status Report
JWST/NIRSpec Detects Warm CO Emission In The Terrestrial-Planet Zone Of HD 131488
We have obtained a high-resolution, JWST NIRSpec 2.87 — 5.14 μm spectrum of the debris disk around HD 131488.
Posted inAtmospheres, Climate, Weather, Biogeochemical Cycles & Geobiology, Biosignatures & Paleobiology, Exoplanets, -moons, -comets, Gaia - Planetary Perspectives, Habitable Zones, Status Report
Observational Tests of Terrestrial Planet Buffering Feedbacks and the Habitable Zone Concept
The habitable zone is defined as the orbital region around a star where planetary feedback cycles buffer atmospheric greenhouse gases that, in combination with solar luminosity, maintain surface temperatures suitable […]
Posted inAtmospheres, Climate, Weather, Biogeochemical Cycles & Geobiology, Biosignatures & Paleobiology, Exoplanets, -moons, -comets, Imaging & Spectroscopy, Status Report
Impacts of Atmospheric Carbon Species and Stellar Type on Climates of Terrestrial Planets
The climates of terrestrial planets are largely determined by the composition of their atmospheres and spectral types of their host stars. Previous studies suggest a wide range of carbon species […]
Posted inAstrogeology, Exoplanets, -moons, -comets, Habitable Zones, Magnetic Fields, Electromagnetism, bioelectricity,, Radiation, Status Report
Can A Convecting Magma Ocean Offer A Solution To The Puzzling Case Of Core Convection In Early Earth?
Convective flow in Earth’s iron-rich liquid core drives self-sustained dynamo action, generating Earth’s magnetic field, which is strongest among all terrestrial planets of the solar system.