What appear to be fragments from the aftermath of massive impacts on Mars that occurred 4.5 billion years ago have been detected deep below the planet’s surface. The discovery was […]
Impact event
Posted inAstrochemistry, Astrogeology, Biochemistry & Organic Chemistry, Biosignatures & Paleobiology, Comets and Asteroids, Impact events, Origin & Evolution of Life, Panspermia, Press Release
Life On Earth Probably Needed Supplies From Space
After the formation of the Solar System, it took a maximum of three million years for the chemical composition of the Earth’s precursor to be completed. This is shown by […]
Posted inAnalog Studies, Astrogeology, Away Teams & Field Reports, Biogeochemical Cycles & Geobiology, Biosignatures & Paleobiology, Caves, Craters, Mountains, Subsurface, Lava Tubes, Extinction events, Impact events, Mapping, Geodesy, Cartography, Bathymetry, Mars, Press Release
Geology And Mars Analog Potential Of The < 2.7-billion-year-old Miralga Impact Structure, North Pole Dome, Pilbara Craton, Australia
North Pole Dome (Pilbara Craton, Western Australia) contains unique geological analogs to early Earth and Mars.
Posted inBiosignatures & Paleobiology, Extinction events, Fossils & Paleontology, Impact events, Press Release
Fossils Shed Light On The Era Before Earth’s Largest Mass Extinction
An international team of paleontologists has spent more than 15 years excavating and studying fossils from Africa to expand our understanding of the Permian, a period of Earth’s history that […]
Posted inEnceladus, Europa, Extinction events, Habitable Zones, Icy Worlds, Impact events, Mapping, Geodesy, Cartography, Bathymetry, Meteorites & Asteroids, Press Release, Titan, Water/Hycean Worlds & Oceanography
Impacts on Ocean Worlds Are Sufficiently Frequent and Energetic to Be of Astrobiological Importance
Evidence for the beneficial role of impacts in the creation of urable or habitable environments on Earth prompts the question of whether meteorite impacts could play a similar role at […]
Posted inAstrogeology, Biogeochemical Cycles & Geobiology, Gaia - Planetary Perspectives, Habitable Zones, Impact events, Status Report, Venus
The Possibility Of A Giant Impact On Venus
Giant impacts were common in the early evolution of the Solar System, and it is possible that Venus also experienced an impact. A giant impact on Venus could have affected […]
Posted inAnalog Studies, Arctic / Antarctic / Alpine, Astrogeology, Away Teams & Field Reports, Biochemistry & Organic Chemistry, Biogeochemical Cycles & Geobiology, Biophysics, Biosignatures & Paleobiology, Habitable Zones, Icy Worlds, Imaging & Spectroscopy, Impact events, Mapping, Geodesy, Cartography, Bathymetry, Microbiology & Virology, Polar / Alpine Expeditions, Sample Return, Status Report
Mineralogy, Geochemistry And Morphology Of Arctic Gossans On Axel Heiberg Island, NU, Canada: Spectroscopic Investigation And Implications For Mars
Gossans are formed through the oxidation of sulfide ore deposits by fluids, such as meteoric water or hydrothermal solutions, leading to locally acidic conditions.
Posted inAstrogeology, Biochemistry & Organic Chemistry, Biogeochemical Cycles & Geobiology, Biosignatures & Paleobiology, Comets and Asteroids, Exoplanets, -moons, -comets, Imaging & Spectroscopy, Impact events, Status Report
Exploring Impact Vapor Plume Reactions from Asteroidal Impacts: Monte Carlo Simulations and Implications for Biomolecules Synthesis
During a hypervelocity impact, both the impactor and target materials evaporate, generating an impact vapor plume with temperatures reaching several thousand K.
Posted inAstrogeology, Biogeochemical Cycles & Geobiology, Exoplanets, -moons, -comets, Impact events, Status Report
Terrestrial Planet Formation From Two Source Reservoirs
This work describes new dynamical simulations of terrestrial planet formation. The simulations started at the protoplanetary disk stage, when planetesimals formed and accreted into protoplanets, and continued past the late […]
Posted inAstrogeology, Atmospheres, Climate, Weather, Caves, Craters, Mountains, Subsurface, Lava Tubes, Impact events, Meteorites & Asteroids, Press Release
Link Established Between A Grand Canyon Landslide And The Meteor Crater Impact Event
Geology is full of detective stories about Earth’s history, and a new paper in Geology by University of New Mexico Distinguished Professors Emeritus Karl Karlstrom and Laurie Crossey, along with […]