A balanced ratio of ocean to land is believed to be essential for an Earth-like biosphere and one may conjecture that plate-tectonics planets should be similar in geological properties.
extrasolar
Posted inExoplanets, -moons, -comets, Habitable Zones, Press Release
Formation Of Super-Earths In Icy Dead Zones Around Low-mass Stars
While giant planet occurrence rates increase with stellar mass, occurrence rates of close-in super-Earths decrease.
Posted inAstronomy & Telescopes, Atmospheres, Climate, Weather, Exoplanets, -moons, -comets, Imaging & Spectroscopy, Press Release
Hazy With A Chance Of Star Spots: Constraining The Atmosphere Of The Young Planet, K2-33b
Although all-sky surveys have led to the discovery of dozens of young planets, little is known about their atmospheres. Here, we present multi-wavelength transit data for the super Neptune-sized exoplanet, […]
Posted inExoplanets, -moons, -comets, Habitable Zones, Press Release, Space Weather & Heliophysics
Inner Habitable Zone Boundary For Eccentric Exoplanets
The climate of a planet can be strongly affected by its eccentricity due to variations in the stellar flux.
Posted inImaging & Spectroscopy, Missions & Hardware, Press Release, Venus
Spectropolarimetry as a Means to Address Cloud Composition and Habitability for a Cloudy Exoplanetary Atmosphere in the Habitable Zone
In our solar system, the densely cloud-covered atmosphere of Venus stands out as an example of how polarimetry can be used to gain information on cloud composition and particle mean […]
Posted inExoplanets, -moons, -comets, Imaging & Spectroscopy, Press Release
EOS (Equation-Of-State) Manual For Exoplanets
The exoplanet field now abounds with new discoveries of planets and planetary systems. It is of great interest for the scientific community to understand the compositions and internal structures of […]
Posted inAtmospheres, Climate, Weather, Exoplanets, -moons, -comets, Habitable Zones, Imaging & Spectroscopy, Press Release, Water/Hycean Worlds & Oceanography
TOI-1695 b: A Keystone Water World Elucidating Radius Valley Emergence Mechanisms Around Early M Dwarfs
Characterizing the bulk compositions of transiting exoplanets within the M dwarf radius valley (i.e. keystone planets) offers a unique means to establish whether the radius valley emerges from an atmospheric […]
Posted inBiosignatures & Paleobiology, Exoplanets, -moons, -comets, Imaging & Spectroscopy, Press Release
Ultimate Limits Of Exoplanet Spectroscopy: A Quantum Approach
A multimode waveguide can be used as HermiteGaussian mode sorter. Light entering the device can be described as a combination of Hermite-Gaussian modes, each input mode is demultiplexed and sent […]
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 inAstrochemistry, Biosignatures & Paleobiology, Exoplanets, -moons, -comets, Habitable Zones, Imaging & Spectroscopy, Press Release, Venus
Large Interferometer For Exoplanets (LIFE): VIII. Where is the phosphine? Observing exoplanetary PH3 with a space based MIR nulling interferometer
Phosphine could be a key molecule in the understanding of exotic chemistry happening in (exo)planetary atmospheres. While it has been detected in the Solar System’s giant planets, it has not […]