Chemical and chronological information preserved in meteorites permits the reconstruction of events and processes in the solar nebula from the formation of the first solids to the accretion of planetary […]
planet
Posted inAstrochemistry, Astrogeology, Comets and Asteroids, Meteorites & Asteroids, Status Report
Clues For Solar System Formation From Meteorites And Their Parent Bodies
Understanding the origin of comets requires knowledge of how the Solar System formed from a cloud of dust and gas 4.567 Gyr ago.
Posted inAstrogeology, Exoplanets, -moons, -comets, Imaging & Spectroscopy, Status Report, Stellar Cartography
Carving the Edges of the Rocky Planet Population
Short-period planets provide ideal laboratories for testing star-planet interaction. Planets that are smaller than ∼2R⊕ are considered to be largely rocky either having been stripped of or never having acquired […]
Posted inAstrochemistry, Astrogeology, Exoplanets, -moons, -comets, Icy Worlds, Status Report, Water/Hycean Worlds & Oceanography
Water Enrichment from Pebble Drift in Disks with Gap-forming Planets
Volatiles like H2O are present as ice in solids in the outer cold regions of protoplanetary disks and as vapor in the warm inner regions within the water snow line.
Posted inAstronomy & Telescopes, Exoplanets, -moons, -comets, Impact events, Status Report
Migration of Bodies to the Earth from Different Distances from the Sun
Migration of bodies under the gravitational influence of almost formed planets was studied, and probabilities of their collisions with the Earth and other terrestrial planets were calculated. Based on the […]
Posted inExoplanets, -moons, -comets, Status Report, Stellar Cartography
Planetary Population Synthesis
The planetary population synthesis method aims at comprehensively testing planet formation theories against observational evidence and providing theoretical sets of planets to help interpret observations and inform instrument development.
Posted inAlpha Centauri, Astrogeology, Beta Pictoris, Ceres, Exoplanets, -moons, -comets, Gas Giants, Icy Worlds, Jupiter, Lava / magma ocean / Volcanic Worlds, Mapping, Geodesy, Cartography, Bathymetry, Mars, Mercury, Neptune, Pluto, Proxima Centauri, Saturn, Status Report, tau Ceti, TRAPPIST-1, Uranus, Venus, Water/Hycean Worlds & Oceanography
Classifications For Exoplanet and Exoplanetary Systems
When a star is described as a spectral class G2V, we know its approximate mass, temperature, age, and size. At more than 5,700 exoplanets discovered, it is a natural developmental […]
Posted inExoplanets, -moons, -comets, Impact events, Moon, Status Report
Large Planets May Not Form Fractionally Large Moons
One of the unique aspects of Earth is that it has a fractionally large Moon, which is thought to have formed from a Moon-forming disk generated by a giant impact.
Posted inBiogeochemical Cycles & Geobiology, Biosignatures & Paleobiology, Exoplanets, -moons, -comets, Habitable Zones, Press Release
The Abundance of Belatedly Habitable Planets And Ambiguities In Definitions Of The Continuously Habitable Zone
A planet’s history dictates its current potential to host habitable conditions and life. The concept of the Continuously Habitable Zone (CHZ) has been used to define the region around a […]
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.