Posted inAstrogeology, Biogeochemical Cycles & Geobiology, Exoplanets, -moons, -comets, Gaia - Planetary Perspectives, Habitable Zones, Lava / magma ocean / Volcanic Worlds, Status Report, Water/Hycean Worlds & Oceanography

Ignan Earths: Habitability of Terrestrial Planets With Extreme Internal Heating

Is it possible for a rocky planet to have too much internal heating to maintain a habitable surface environment? In the Solar System, the best example of a world with […]

Posted inAtmospheres, Climate, Weather, Biogeochemical Cycles & Geobiology, Biosignatures & Paleobiology, Fossils & Paleontology, Gaia - Planetary Perspectives, Habitable Zones, Mapping, Geodesy, Cartography, Bathymetry, Press Release, Terraforming & Geoengineering, Water/Hycean Worlds & Oceanography

Prehistoric Rock In Japan Reveals Clues To A Major Ocean Anoxic Event

By studying prehistoric rocks and fossils emerging from the side of Mount Ashibetsu in Japan, researchers have precisely refined the timing and duration of Ocean Anoxic Event 1a (OAE 1a), […]

Posted inArctic / Antarctic / Alpine, Astrogeology, Atmospheres, Climate, Weather, Away Teams & Field Reports, Biochemistry & Organic Chemistry, Biogeochemical Cycles & Geobiology, Biosignatures & Paleobiology, Caves, Craters, Mountains, Subsurface, Lava Tubes, Fossils & Paleontology, Habitable Zones, Mapping, Geodesy, Cartography, Bathymetry, Origin & Evolution of Life, Press Release, Robotics/Rovers/UAVs, ROVs/Submersibles/Diving, Sample Return

Marine Mineral Formations in the Arctic Ocean Challenge Existing Geologic Theories

A new study from USGS describes a previously unknown process of marine mineral formation in the Arctic Ocean, driven by frictional heating along tectonic faults rather than by hydrothermal activity.

Posted inAnalog Studies, Arctic / Antarctic / Alpine, Europa, Habitable Zones, Icy Worlds, Imaging & Spectroscopy, Lava / magma ocean / Volcanic Worlds, Mapping, Geodesy, Cartography, Bathymetry, Missions & Hardware, ROVs/Submersibles/Diving, Status Report, Water/Hycean Worlds & Oceanography

Assessing the Detectability of Europa’s Seafloor Topography from Europa Clipper’s Gravity Data

Due to its size and tidal heating, Europa may potentially possess active volcanism and hydrothermal circulation at its seafloor.

Posted inAstrobiology (general), Atmospheres, Climate, Weather, Biogeochemical Cycles & Geobiology, Biosignatures & Paleobiology, Habitable Zones, Intelligence & Language, Origin & Evolution of Life, Press Release, SETI & Technosignatures, Societal Issues

Geoscientists Dig Into Why We May Be Alone In The Milky Way (Tectonics)

New research by University of Texas at Dallas geoscientist Dr. Robert Stern and a colleague suggests a geological explanation for why conclusive evidence for advanced extraterrestrial (ET) civilizations has not […]

Posted inBiogeochemical Cycles & Geobiology, Biophysics, Biosignatures & Paleobiology, Extremeophiles and Extreme Environments, Habitable Zones, Microbiology & Virology, Press Release, ROVs/Submersibles/Diving, Water/Hycean Worlds & Oceanography

Newly Discovered Hydrothermal Vents At Depths Of 3,000 Meters Off Svalbard

Hydrothermal vents are seeps on the sea floor from which hot liquids escape. “Water penetrates into the ocean floor where it is heated by magma. The overheated water then rises […]

Posted inAstrogeology, Atmospheres, Climate, Weather, Biogeochemical Cycles & Geobiology, Biosignatures & Paleobiology, Caves, Craters, Mountains, Subsurface, Lava Tubes, Imaging & Spectroscopy, Lava / magma ocean / Volcanic Worlds, Mapping, Geodesy, Cartography, Bathymetry, Missions & Hardware, Status Report, Venus

Ongoing Venus Volcanic Activity Discovered With NASA’s Magellan Data

Direct geological evidence of recent volcanic activity on Venus has been observed for a second time. Scientists in Italy analyzed archival data from NASA’s Magellan mission to reveal surface changes […]

Posted inAway Teams & Field Reports, Biosignatures & Paleobiology, Enceladus, Exploration Gear & Tech, Extremeophiles and Extreme Environments, Fossils & Paleontology, Habitable Zones, Icy Worlds, Missions & Hardware, Origin & Evolution of Life, Press Release, Robotics/Rovers/UAVs, ROVs/Submersibles/Diving, Tricorders & Sensors

Expedition To The Atacama Trench: Thinking Ahead To Enceladus and Europa

The Atacama in northern Chile is the oldest and driest desert on Earth. While tectonic activity reconfigured the shape and arrangement of land masses over the last 150 million years, […]

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