Rocky planets may acquire a primordial atmosphere by outgassing of volatiles from their magma ocean. The distribution of O between H2O, CO and CO2 in chemical equilibrium subsequently changes significantly […]
rocky exoplanet
Posted inAstronomy & Telescopes, Atmospheres, Climate, Weather, Exoplanets, -moons, -comets, Imaging & Spectroscopy, Status Report
Reliable Detections of Atmospheres on Rocky Exoplanets with Photometric JWST Phase Curves
The distribution of different types of atmospheres and surfaces on rocky planets is one of the major questions in exoplanet astronomy, but there are currently no published unambiguous detections of […]
Posted inAstrochemistry, Astrogeology, Atmospheres, Climate, Weather, Exoplanets, -moons, -comets, Imaging & Spectroscopy, Status Report
Hints Of A Sulfur-rich Atmosphere Around the 1.6 R⊕ Super-Earth L98-59 d from JWST NIRSpec G395H Transmission Spectroscopy
Detecting atmospheres around planets with a radius below 1.6 R⊕, commonly referred to as rocky planets (Rogers_2015, Rogers_2021), has proven to be challenging. However, rocky planets orbiting M-dwarfs are ideal […]
Posted inAstrochemistry, Astrogeology, Astronomy & Telescopes, Exoplanets, -moons, -comets, Habitable Zones, Imaging & Spectroscopy, Status Report
Dust-Gas Coupling in Turbulence – and MHD Wind-Driven Protoplanetary Disks: Implications for Rocky Planet Formation
The degree of coupling between dust particles and their surrounding gas in protoplanetary disks is quantified by the dimensionless Stokes number. The Stokes number (St) governs particle size and spatial […]
Posted inAtmospheres, Climate, Weather, Biogeochemical Cycles & Geobiology, Imaging & Spectroscopy, Lava / magma ocean / Volcanic Worlds, Status Report
Clouds On Partial Atmospheres Of Lava Planets And Where To Find Them
With dayside temperatures hot enough to sustain a magma ocean and a silicate atmosphere, lava planets are the best targets to study the atmosphere of a rocky world.
Posted inAstronomy & Telescopes, Biosignatures & Paleobiology, Exoplanets, -moons, -comets, Habitable Zones, Icy Worlds, Imaging & Spectroscopy, Missions & Hardware, PLATO, Press Release, Water/Hycean Worlds & Oceanography
The PLATO Terrestrial Planet Hunter Telescope Will Begin Searching For Another Earth In 2026
Europe’s next big space mission – a telescope that will hunt for Earth-like rocky planets outside of our solar system – is on course to launch at the end of […]
Posted inAstrochemistry, Astronomy & Telescopes, Atmospheres, Climate, Weather, Biosignatures & Paleobiology, Exoplanets, -moons, -comets, Habitable Zones, Imaging & Spectroscopy, Proxima Centauri, Status Report, TRAPPIST-1
STScI Initiates A Concerted Search For Atmospheres Around M-dwarf Exoplanets
The STScI Director, Dr. Jennifer Lotz, has accepted the primary recommendation of the Working Group on Strategic Exoplanet Initiatives , and has decided to proceed with a large-scale survey of […]
![The [Mg/Si]-[C/O] diagram for the M dwarf sample (overlying orange dots) and GK dwarf sample (underlying colourful dots in density). An ODR fit is applied to the M dwarf sample, with the best fit shown in the solid line and 1σ and 2σ error intervals shown in dash and dot lines (in brown), respectively. The regression parameters are also shown on the plot. A Student’s t-test is also applied to test the significance of the slope different from zero, and the resultant p-value is less than 0.001. -- astro-ph.SR](https://i0.wp.com/astrobiology.com/wp-content/uploads/2024/07/Towards-Characterising-Rocky-Worlds.png?resize=1200%2C720&ssl=1)
Posted inAstronomy & Telescopes, Atmospheres, Climate, Weather, Biochemistry & Organic Chemistry, Biosignatures & Paleobiology, Exoplanets, -moons, -comets, Habitable Zones, Icy Worlds, Status Report, Water/Hycean Worlds & Oceanography
Towards Characterising Rocky Worlds: Trends In Chemical Make-ups Of M dwarfs Versus GK dwarfs
Elemental abundances of Sun-like stars are crucial for understanding the detailed properties of their planets. However, measuring elemental abundances in M stars is challenging due to their faintness and pervasive […]
Posted inAtmospheres, Climate, Weather, Biogeochemical Cycles & Geobiology, Biosignatures & Paleobiology, Exoplanets, -moons, -comets, Habitable Zones, Press Release, TRAPPIST-1
Asymmetries In The Simulated Ozone Distribution On TRAPPIST-1e Due To Orography
TRAPPIST-1e is a tidally locked rocky exoplanet orbiting the habitable zone of an M dwarf star. Upcoming observations are expected to reveal new rocky exoplanets and their atmospheres around M […]
Posted inAstronomy & Telescopes, Exoplanets, -moons, -comets, Status Report, Stellar Cartography
Revising Properties of Planet-Host Binary Systems. IV. The Radius Distribution of Small Planets in Binary Star Systems is Dependent on Stellar Separation
Small planets (Rp≤4R⊕) are divided into rocky super-Earths and gaseous sub-Neptunes separated by a radius gap, but the mechanisms that produce these distinct planet populations remain unclear.