Two massive asteroids hit Earth around 35.65 million years ago, but did not lead to any lasting changes in the Earth’s climate, according to a new study by UCL researchers.
Extinction events
Posted inAstrogeology, Atmospheres, Climate, Weather, Away Teams & Field Reports, Biogeochemical Cycles & Geobiology, Cryobiology, Extinction events, Habitable Zones, Icy Worlds, Mapping, Geodesy, Cartography, Bathymetry, Status Report, Water/Hycean Worlds & Oceanography
Hematite U-Pb Dating Of Snowball Earth Meltwater Events
The Snowball Earth hypothesis predicts global ice cover; however, previous descriptions of Cryogenian (720-635 Ma) glacial deposits are limited to continental margins and shallow marine basins.
Posted inAtmospheres, Climate, Weather, Biogeochemical Cycles & Geobiology, Extinction events, Press Release, Terraforming & Geoengineering, Water/Hycean Worlds & Oceanography
Ocean World Update: Sea Life On Earth Will Struggle To Survive Future Global Warming
A new study highlights how some marine life could face extinction over the next century, if human-induced global warming worsens.
Posted inAtmospheres, Climate, Weather, Biogeochemical Cycles & Geobiology, Biosignatures & Paleobiology, Extinction events, Gaia - Planetary Perspectives, Habitable Zones, Origin & Evolution of Life, Status Report
A Dynamical Systems Perspective On The Celestial Mechanical Contribution To The Emergence Of Life
Biological activities are often seen entrained onto the day-night and other celestial mechanical cycles (e.g., seasonal and lunar), but studies on the origin of life have largely not accounted for […]
Posted inAstrogeology, Atmospheres, Climate, Weather, Biogeochemical Cycles & Geobiology, Biosignatures & Paleobiology, Extinction events, Lava / magma ocean / Volcanic Worlds, Press Release, Terraforming & Geoengineering
Carbon Dioxide Release From Magma Deep Beneath Ancient Volcanoes Was A Hidden Driver Of Earth’s Past Climate
An international team of geoscientists led by a volcanologist at Rutgers University-New Brunswick has discovered that, contrary to present scientific understanding, ancient volcanoes continued to spew carbon dioxide into the […]
Posted inAstrogeology, Atmospheres, Climate, Weather, Away Teams & Field Reports, Biogeochemical Cycles & Geobiology, Biosignatures & Paleobiology, Extinction events, Fossils & Paleontology, Habitable Zones, Impact events, Mapping, Geodesy, Cartography, Bathymetry, Meteorites & Asteroids, Status Report
Effect Of A Giant Meteorite Impact On Paleoarchean Surface Environments And Life
Large meteorite impacts must have strongly affected the habitability of the early Earth. Rocks of the Archean Eon record at least 16 major impact events, involving bolides larger than 10 […]
Posted inAtmospheres, Climate, Weather, Biogeochemical Cycles & Geobiology, Caves, Craters, Mountains, Subsurface, Lava Tubes, Extinction events, Gaia - Planetary Perspectives, Habitable Zones, Imaging & Spectroscopy, Impact events, Lava / magma ocean / Volcanic Worlds, Status Report, Terraforming & Geoengineering, Water/Hycean Worlds & Oceanography
X-Raying Neutral Density Disturbances in the Mesosphere and Lower Thermosphere induced by the 2022 Hunga-Tonga Volcano Eruption-Explosion
We present X-ray observations of the upper atmospheric density disturbance caused by the explosive eruption of the Hunga Tonga-Hunga Ha’apai (HTHH) volcano on 15 January 2022.
Posted inAstrogeology, Caves, Craters, Mountains, Subsurface, Lava Tubes, Extinction events, Fossils & Paleontology, Impact events, Press Release
Australian Crater Could Offer Fresh Insight Into Earth’s Geological History
VCU’s Arif Sikder of the Center for Environmental Studies is part of the research team that is going back in time – by hundreds of millions of years.
Posted inAtmospheres, Climate, Weather, Biogeochemical Cycles & Geobiology, Biosignatures & Paleobiology, Extinction events, Extremeophiles and Extreme Environments, Gaia - Planetary Perspectives, Habitable Zones, Microbiology & Virology, Origin & Evolution of Life, Status Report
Astrovirology And Terrestrial Life Survival
Microbial organisms have been implicated in several mass extinction events throughout Earth’s planetary history. Concurrently, it can be reasoned from recent viral pandemics that viruses likely exacerbated the decline of […]
Posted inCryobiology, Extinction events, Gaia - Planetary Perspectives, Genomics, Proteomics, Bioinformatics, Habitable Zones, Life Support Systems, Panspermia, Planetary Protection & Biosafety, Sample Return, Societal Issues, Status Report, Terraforming & Geoengineering
Safeguarding Earth’s Biodiversity By Creating A Lunar Biorepository
Earth’s biodiversity is increasingly threatened and at risk. We propose a passive lunar biorepository for long-term storage of prioritized taxa of live cryopreserved samples to safeguard Earth’s biodiversity and to […]