The isotopic signature of atmospheric carbon offers a unique tracer for the history of the Martian atmosphere and the origin of organic matter on Mars.
Atmospheres, Climate, Weather
Posted inAstrogeology, Atmospheres, Climate, Weather, Biogeochemical Cycles & Geobiology, Biophysics, Mars, Status Report
Thermal Creep On Mars: Visualizing A Soil Layer Under Tension
At low ambient pressure, temperature gradients in porous soil lead to a gas flow, called thermal creep. With this regard, Mars is a unique as the conditions for thermal creep […]
Posted inAtmospheres, Climate, Weather, Biogeochemical Cycles & Geobiology, Exoplanets, -moons, -comets, Habitable Zones, Status Report
Sporadic Spin-Orbit Variations in Compact Multi-planet Systems and their Influence on Exoplanet Climate
Climate modeling has shown that tidally influenced terrestrial exoplanets, particularly those orbiting M-dwarfs, have unique atmospheric dynamics and surface conditions that may enhance their likelihood to host viable habitats.
Posted inAtmospheres, Climate, Weather, Exoplanets, -moons, -comets, Imaging & Spectroscopy, Status Report, Venus
The Earth-sized Exoplanet Next Door: The Venus Cloud Discontinuity in 2022
First identified in 2016 by JAXA’s Akatsuki mission, the discontinuity/disruption is a recurrent wave observed to propagate during decades at the deeper clouds of Venus (47–56 km above the surface), […]
Posted inAtmospheres, Climate, Weather, Exoplanets, -moons, -comets, Extinction events, Habitable Zones, Impact events, Press Release
About The Loss Of A Primordial Atmosphere Of Super-Earths By Planetesimal Impacts
We consider planets composed of water ice and rock, located far from a central star. In an earlier study, computing the growth of planets by continuous accretion, we found that […]
Posted inAtmospheres, Climate, Weather, Exoplanets, -moons, -comets, Habitable Zones, Imaging & Spectroscopy, Status Report, Venus
Synergies Between Venus And Exoplanetary Observations
In this chapter we examine how our knowledge of present day Venus can inform terrestrial exoplanetary science and how exoplanetary science can inform our study of Venus. In a superficial […]
Posted inAtmospheres, Climate, Weather, Biosignatures & Paleobiology, Exoplanets, -moons, -comets, Habitable Zones, Imaging & Spectroscopy, Status Report
Presence Of Liquid Water During The Evolution Of Exomoons Orbiting Ejected Free-floating Planets
Free-floating planets (FFPs) can result from dynamical scattering processes happening in the first few million years of a planetary system’s life.
Posted inAtmospheres, Climate, Weather, Biogeochemical Cycles & Geobiology, Habitable Zones, Mars, Status Report
Constraints On The Size and Composition Of The Ancient Martian Atmosphere From Coupled CO2-N2-Ar Isotopic Evolution Models
Present-day Mars is cold and dry, but mineralogical and morphological evidence shows that liquid-water existed on the surface of ancient Mars.
Posted inAtmospheres, Climate, Weather, Mars, Press Release
A Modern-day Mars Climate In The Met Office Unified Model: Dry Simulations
We present results from the Met Office Unified Model (UM), a world-leading climate and weather model, adapted to simulate a dry Martian climate.
Posted inAstronomy & Telescopes, Atmospheres, Climate, Weather, Exoplanets, -moons, -comets, Imaging & Spectroscopy, Status Report, Venus
From Exo-Earths To Exo-Venuses – Flux And Polarization Signatures Of Reflected Light
Terrestrial exoplanets in habitable zones are ubiquitous. It is, however, unknown which have Earth-like or Venus-like climates.