The thermal evolution of magma oceans formed by giant impacts is strongly influenced by a proto-atmosphere through its blanketing effect, which suppresses outgoing planetary radiation.
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Posted inAnalog Studies, Away Teams & Field Reports, Biogeochemical Cycles & Geobiology, Exploration Gear & Tech, Habitable Zones, Imaging & Spectroscopy, Lava / magma ocean / Volcanic Worlds, Mapping, Geodesy, Cartography, Bathymetry, Missions & Hardware, Robotics/Rovers/UAVs, Status Report, Tricorders & Sensors, Water/Hycean Worlds & Oceanography
Water Planet Surveys: Discovering Underwater Volcanoes
The Seabed Minerals Authority (SBMA), in collaboration with other partners such as the National Institute of Water and Atmospheric Research (NIWA), University of California Santa Barbara, and Kiva Marine, recently […]
Posted inAstrogeology, Atmospheres, Climate, Weather, Biogeochemical Cycles & Geobiology, Biosignatures & Paleobiology, Lava / magma ocean / Volcanic Worlds, Mapping, Geodesy, Cartography, Bathymetry, Mars, Press Release
How Ash and Water Intricately Sculpted the Surface of Mars
The plateaus that flank the largest canyon in the Solar System are shrouded in hypnotically complex landforms called light-toned layered deposits. Fifteen years ago, PSI Senior Scientist Catherine Weitz first […]
Posted inAtmospheres, Climate, Weather, Biochemistry & Organic Chemistry, Biogeochemical Cycles & Geobiology, Gaia - Planetary Perspectives, Habitable Zones, Lava / magma ocean / Volcanic Worlds, Microbiology & Virology, Press Release, Terraforming & Geoengineering, Water/Hycean Worlds & Oceanography
Are Volcanoes Behind The Oxygen We Breathe?
It is widely believed that Earth’s atmosphere has been rich in oxygen for about 2.5 billion years due to a relatively rapid increase in microorganisms capable of performing photosynthesis. Researchers, […]
Posted inAstrogeology, Biogeochemical Cycles & Geobiology, Caves, Craters, Mountains, Subsurface, Lava Tubes, Io, Jupiter, Lava / magma ocean / Volcanic Worlds, Press Release
Juno Spots The Most Powerful Volcanic Activity On Io To Date
Even by the standards of Io, the most volcanic celestial body in the solar system, recent events observed on the Jovian moon are extreme.
Posted inAstrogeology, Atmospheres, Climate, Weather, Biogeochemical Cycles & Geobiology, Exoplanets, -moons, -comets, Habitable Zones, Lava / magma ocean / Volcanic Worlds, Status Report, Venus
The Punctuated Evolution of the Venusian Atmosphere From a Transition in Mantle Convective Style and Volcanic Outgassing
A key question in the planetary sciences centers on the divergence between the sibling planets, Venus and Earth. Venus currently does not operate with plate tectonics, and its thick atmosphere […]
Posted inAstrogeology, Biogeochemical Cycles & Geobiology, Caves, Craters, Mountains, Subsurface, Lava Tubes, Io, Jupiter, Lava / magma ocean / Volcanic Worlds, Mapping, Geodesy, Cartography, Bathymetry, Press Release
How Io Became The Most Volcanic Body In Our Solar System
Scientists with NASA’s Juno mission to Jupiter have discovered that the volcanoes on Jupiter’s moon Io are each likely powered by their own chamber of roiling hot magma rather than […]
Posted inAtmospheres, Climate, Weather, Biogeochemical Cycles & Geobiology, Biosignatures & Paleobiology, Extinction events, Fossils & Paleontology, Habitable Zones, Imaging & Spectroscopy, Impact events, Lava / magma ocean / Volcanic Worlds, Meteorites & Asteroids, Press Release
Massive Volcanic Eruptions Did Not Cause The Extinction Of Dinosaurs
Massive volcanic eruptions on the Indian peninsula have long been proposed as an alternative cause for the demise of the dinosaurs. This phase of active volcanism took place in a […]
![Outgassed atmospheric composition at model termination for HD 63433 d (top) and TRAPPIST-1 c (bottom), versus mantle 𝑓 O2 (x-axis), simulated with both atmosphere models (y-axis). Pie chars show volatile volume mixing ratios and white numbers show log10 total surface pressure [bar]. -- astro-ph.EP](https://i0.wp.com/astrobiology.com/wp-content/uploads/2024/12/Convective-Shutdown-In-The-Atmospheres.png?resize=1200%2C720&ssl=1)
Posted inAstrogeology, Atmospheres, Climate, Weather, Biogeochemical Cycles & Geobiology, Exoplanets, -moons, -comets, Habitable Zones, Lava / magma ocean / Volcanic Worlds, Status Report, TRAPPIST-1
Convective Shutdown In The Atmospheres of Lava Worlds
Atmospheric energy transport is central to the cooling of primordial magma oceans. Theoretical studies of atmospheres on lava planets have assumed that convection is the only process involved in setting […]
Posted inBiochemistry & Organic Chemistry, Biophysics, Habitable Zones, Microbiology & Virology, Origin & Evolution of Life, Press Release
Young Volcanic Terrains Are Windows Into Early Microbial Colonization
Volcanic eruptions create sterile environments with a variety of habitats available for colonization including hot springs, fumaroles, lava tubes, and rock surfaces.