Clouds are ubiquitous – they arise for every solar system planet that possesses an atmosphere and have also been suggested as a leading mechanism for obscuring spectral features in exoplanet […]
astro-ph.EP
Posted inAstrochemistry, Biosignatures & Paleobiology, Exoplanets, -moons, -comets, Panspermia, Press Release
Solid Grains Ejected From Terrestrial Exoplanets As A Probe Of The Abundance Of life In the Milky Way
Searching for extrasolar biosignatures is important to understand life on Earth and its origin.
Posted inAtmospheres, Climate, Weather, Biogeochemical Cycles & Geobiology, Habitable Zones, Mars, Press Release
InSight Pressure Data Recalibration, and Its Application to the Study of Long-Term Pressure Changes on Mars
Observations of the South Polar Residual Cap suggest a possible erosion of the cap, leading to an increase of the global mass of the atmosphere.
Posted inBiogeochemical Cycles & Geobiology, Biosignatures & Paleobiology, Exoplanets, -moons, -comets, Imaging & Spectroscopy, Press Release
Earth as an Exoplanet: II. Earth’s Time-Variable Thermal Emission and its Atmospheric Seasonality of Bio-Indicators
We assess the dependence of Earth’s disk-integrated mid-infrared thermal emission spectrum on observation geometries and investigate which and how spectral features are impacted by seasonality on Earth.
Posted inHabitable Zones, Mars, Press Release
Early Mars’ Habitability And Global Cooling By H2-based Methanogens
During the Noachian, Mars’ crust may have provided a favorable environment for microbial life.
Posted inBiogeochemical Cycles & Geobiology, Press Release, Water/Hycean Worlds & Oceanography
A Note on the “Various Atmospheres over Water Oceans on Terrestrial Planets with a One-Dimensional Radiative-Convective Equilibrium Model
It has been investigated the possibility of the various atmospheres over water oceans. We have considered the H2 atmosphere and He atmosphere concerning to N2 atmosphere over oceans.
Posted inAtmospheres, Climate, Weather, Exoplanets, -moons, -comets, Habitable Zones, Imaging & Spectroscopy, Press Release
Climate Of High Obliquity Exo-terrestrial Planets With A Three-dimensional Cloud System Resolving Climate Model
Planetary climates are strongly affected by planetary orbital parameters such as obliquity, eccentricity, and precession.
Posted inAstrogeology, Biogeochemical Cycles & Geobiology, Exoplanets, -moons, -comets, Lava / magma ocean / Volcanic Worlds, Press Release
Internal Or External Magma Oceans In The Earliest Protoplanets — Perspectives From Nitrogen And Carbon Fractionation
When the extent of protoplanetary melting approached magma ocean (MO)-like conditions, alloy melts efficiently segregated from the silicates to form metallic cores.
Posted inHabitable Zones, Press Release, Venus
Noble Gases And Stable Isotopes Track The Origin And Early Evolution Of The Venus Atmosphere
The composition the atmosphere of Venus results from the integration of many processes entering into play over the entire geological history of the planet.
Posted inHabitable Zones, Press Release, Titan, Water/Hycean Worlds & Oceanography
Air-sea Interactions On Titan: Effect Of Radiative Transfer On The Lake Evaporation And Atmospheric Circulation
Titan’s northern high latitudes host many large hydrocarbon lakes. Like water lakes on Earth, Titan’s lakes are constantly subject to evaporation.