We seek to model the coupled evolution of a planet and a civilization through the era when energy harvesting by the civilization drives the planet into new and adverse climate […]
Atmospheres, Climate, Weather
Posted inAtmospheres, Climate, Weather
The Physics of Falling Raindrops in Diverse Planetary Atmospheres
The evolution of a single raindrop falling below a cloud is governed by fluid dynamics and thermodynamics fundamentally transferable to planetary atmospheres beyond modern Earth’s. Here, we show how three […]
Posted inAnalog Studies, Atmospheres, Climate, Weather, Away Teams & Field Reports, Biochemistry & Organic Chemistry, Biogeochemical Cycles & Geobiology, Biophysics, Biosignatures & Paleobiology, Caves, Craters, Mountains, Subsurface, Lava Tubes, Extremeophiles and Extreme Environments, Fossils & Paleontology, Imaging & Spectroscopy, Mapping, Geodesy, Cartography, Bathymetry, Microbiology & Virology, Origin & Evolution of Life, Sample Return
Astrobiologist Kennda Lynch Uses Analogs On Earth to Find Life On Mars
If we find life on the Red Planet, we’ll have astrobiologists like Dr. Kennda Lynch to thank. Lynch is an astrobiologist and geomicrobiologist studying life in extreme environments on Earth […]
Posted inAstrogeology, Atmospheres, Climate, Weather, Extinction events, Press Release, Water/Hycean Worlds & Oceanography
Volcanic Eruptions Directly Triggered Ocean Acidification During The Early Cretaceous
Around 120 million years ago, the earth experienced an extreme environmental disruption that choked oxygen from its oceans. Known as oceanic anoxic event (OAE) 1a, the oxygen-deprived water led to […]
Posted inAstrochemistry, Astronomy & Telescopes, Atmospheres, Climate, Weather, Biosignatures & Paleobiology, Exoplanets, -moons, -comets, Habitable Zones, Imaging & Spectroscopy, Neptune
Methane As A Dominant Absorber In The Habitable-zone Sub-Neptune K2-18 b
In their Letter, Tsiaras et al.1 reported the detection of water vapour in the atmosphere of K2-18 b, an exoplanet of 7 to 10 Earth masses located in the habitable […]
Posted inAstronomy & Telescopes, Atmospheres, Climate, Weather, Biosignatures & Paleobiology, Exoplanets, -moons, -comets, Gaia - Planetary Perspectives, Habitable Zones, Imaging & Spectroscopy, Status Report, Water/Hycean Worlds & Oceanography
The Occurrence of Rocky Habitable Zone Planets Around Solar-Like Stars from Kepler Data
We present occurrence rates for rocky planets in the habitable zones (HZ) of main-sequence dwarf stars based on the Kepler DR25 planet candidate catalog and Gaia-based stellar properties.
Posted inAtmospheres, Climate, Weather, Habitable Zones, Impact events, Press Release
Evolution Of The Earth's Atmosphere During Late Veneer Accretion
Recent advances in our understanding of the dynamical history of the Solar system have altered the inferred bombardment history of the Earth during accretion of the Late Veneer, after the […]
Posted inAtmospheres, Climate, Weather, Extremeophiles and Extreme Environments, Habitable Zones, Microbiology & Virology, Press Release
Life In The Clouds
High above our heads, even beyond 120,000 feet up, scientists have found tiny organisms called microbes. These high-flyers were swept up from the ground by winds and storms, or spewed […]
Posted inAtmospheres, Climate, Weather, Biogeochemical Cycles & Geobiology, Exoplanets, -moons, -comets, Press Release, Proxima Centauri
An Earth-like Stellar Wind Environment For Proxima Centauri c
A new planet has been recently discovered around Proxima Centauri. With an orbital separation of ∼1.44 au and a minimum mass of about 7 M⊕, Proxima c is a prime […]
Posted inAtmospheres, Climate, Weather, Biogeochemical Cycles & Geobiology, Citizen Science / Open Science, Extinction events, Press Release, Space Weather & Heliophysics
Exploding Stars May Have Caused Mass Extinction On Earth
Imagine reading by the light of an exploded star, brighter than a full moon – it might be fun to think about, but this scene is the prelude to a […]