[Science China Press] Earth’s magnetic field is generated by the convection of liquid iron in the outer core. It forms a protective shield that deflects most solar wind and galactic […]
Extinction event
Posted inAstrobiology (general)
The Evolution Of Oxygen, Temperature, And Marine Aerobic Habitat For Animals Over The Last Billion Years Of Earth History
[Current Biology (Cell)] Atmospheric and ocean oxygen levels and temperature have changed considerably over Earth history, and many of these changes coincided with similarly dramatic changes in marine life.
Posted inImpact events
JWST Studies Of Planet-shattering Collisions
[ESA]. In the early history of our Solar System, a Mars-sized object called Theia smashed into the infant Earth, vapourising massive amounts of rock and blasting it into space. Some […]
Posted inExtinction events
Dinosaur-killing Asteroid Also Created A Dust Cloud That Insulated Earth, Charbroiling Cretaceous Creatures
[Purdue University] Sixty-six million years ago, an asteroid about the size of Mount Everest smacked into Earth near where the Yucatan Peninsula is today. That impact created the Chicxulub crater […]
Posted inImpact events
Researchers Identify Class Of Oddball Meteorite That Killed Earth’s Dinosaurs
[University of British Columbia] A rare CO chondrite meteorite was the probable impactor that struck Earth 66 million years ago, wiping out 75 per cent of Earth’s species, including non-avian […]
Posted inExtinction events
Researchers Confirm The Cause Of Earth’s Biggest Mass Extinction
[Stanford University] A new Stanford-led study offers the clearest picture yet of how some ocean life survived our planet’s biggest mass extinction while most animals did not.
Posted inAtmospheres, Climate, Weather, Biogeochemical Cycles & Geobiology, Biosignatures & Paleobiology, Gaia - Planetary Perspectives, Status Report
Molecular Fossils Reveal Secrets Of Earth’s Recovery From Ancient Global Warming Event
Scientists have uncovered new evidence from one of Earth’s most extreme ancient warming events, revealing how the climate may recover long after human-driven CO₂ emissions cease.
Posted inAstrogeology, Biosignatures & Paleobiology, Caves, Craters, Mountains, Subsurface, Lava Tubes, Extinction events, Fossils & Paleontology, Habitable Zones, Imaging & Spectroscopy, Impact events, Mapping, Geodesy, Cartography, Bathymetry, Press Release
Meteorite Which Wiped Out The Dinosaurs Also Created A Record-breaking Hydrothermal System
The meteorite which caused the extinction of the dinosaurs also created an underground environment suited to supporting new life, and new research suggests it lasted for millions of years longer […]
Posted inAtmospheres, Climate, Weather, Biosignatures & Paleobiology, Comets and Asteroids, Extinction events, Habitable Zones, Impact events, Meteorites & Asteroids, Status Report
An 800-Million-Year-Old Impact Shower on the Terrestrial Planets from the Breakup of the Eulalia Parent Body
Multiple studies have proposed a substantial surge in large lunar impacts approximately 800 million years ago (Ma).
Posted inBiogeochemical Cycles & Geobiology, Biosignatures & Paleobiology, Extinction events, Fossils & Paleontology, Gaia - Planetary Perspectives, Impact events, Nomenclature, Systematics, Natural History, Origin & Evolution of Life, Press Release, Water/Hycean Worlds & Oceanography
Pioneering Research Sheds New Light On What Shaped Extinction Pattern Of Prehistoric Marine Life – And Size Clearly Mattered
Scientists have shown conclusively for the first time that tiny marine organisms in polar oceans survived the mass extinction event that wiped out prehistoric dinosaurs because they needed less energy […]