McMurdo Dry Valleys
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Dale Andersen’s Astrobiology Antarctic Status Report: 18 February 2026: Eclipse Watching And Base Camp Packing

by Keith Cowing

Dale: A partial eclipse over Lake Untersee yesterday—an ordinary piece of celestial clockwork that felt anything but ordinary from the icy shores of Lake Untersee in the mountains of Antarctica. […]

Posted inAnalog Studies, Arctic / Antarctic / Alpine, Astronauts and Explorers, Away Teams & Field Reports, Biosignatures & Paleobiology, Dale Andersen's Field Reports, Exploration Gear & Tech, Extremeophiles and Extreme Environments, Habitable Zones, Icy Worlds, Imaging & Spectroscopy, Life Support Systems, Mapping, Geodesy, Cartography, Bathymetry, Microbiology & Virology, Missions & Hardware, Nomenclature, Systematics, Natural History, Origin & Evolution of Life, People Of Astrobiology, Press Release, Robotics/Rovers/UAVs, ROVs/Submersibles/Diving, Sample Return, Tricorders & Sensors, Water/Hycean Worlds & Oceanography

Dale Andersen’s Astrobiology Antarctic Status Report: 15 February 2026: Diving Under The Ice At Lake Untersee

by Keith Cowing

Keith, Sorry for the quiet—our days have been packed, and out here every usable hour feels borrowed. Since my last report the weather has changed its mind a few times. […]

Posted inAnalog Studies, Arctic / Antarctic / Alpine, Away Teams & Field Reports, Biosignatures & Paleobiology, Caves, Craters, Mountains, Subsurface, Lava Tubes, Cryobiology, Exploration Gear & Tech, Extremeophiles and Extreme Environments, Habitable Zones, Icy Worlds, Mapping, Geodesy, Cartography, Bathymetry, Microbiology & Virology, Sample Return, Status Report, Tricorders & Sensors

Setting A Polyphasic Approach To Study Antarctic Cryptoendolithic Communities As A Toolkit For Astrobiology

by Keith Cowing

The present study has set up a pilot experiment to optimise the most promising assays for investigating the survival of Antarctic microbial cryptoendolithic communities – a natural astrobiological benchmark – […]

Posted inAnalog Studies, Arctic / Antarctic / Alpine, Away Teams & Field Reports, Biochemistry & Organic Chemistry, Biophysics, Biosignatures & Paleobiology, Cryobiology, Exploration Gear & Tech, Extremeophiles and Extreme Environments, Habitable Zones, Icy Worlds, Mars, Microbiology & Virology, Origin & Evolution of Life, Polar / Alpine Expeditions, Press Release, Sample Return

Multi-technique Characterization Of Iron Reduction By An Antarctic Shewanella: An Analog System For Putative Martian Biosignature Identification

by Keith Cowing

Microbes from terrestrial extreme environments enable testing of biosignature production in conditions relevant to astrobiological targets.

Posted inAnalog Studies, Arctic / Antarctic / Alpine, Away Teams & Field Reports, Biophysics, Biosignatures & Paleobiology, Cryobiology, Microbiology & Virology, Planetary Protection & Biosafety, Sample Return, Status Report

Characterizing Microbial Communities in >7000- and >180,000-Year-Old Antarctic Permafrost Using a Low-Biomass Decontamination Protocol

by Keith Cowing

The McMurdo Dry Valleys may harbor diverse surface microbial communities, yet little is known about subsurface microorganisms in permafrost and their potential for paleoecological reconstruction.

Posted inArctic / Antarctic / Alpine, Atmospheres, Climate, Weather, Away Teams & Field Reports, Cryobiology, Exploration Gear & Tech, Extremeophiles and Extreme Environments, Gaia - Planetary Perspectives, Icy Worlds, Mapping, Geodesy, Cartography, Bathymetry, Press Release, Tardigrades

Ice World Update: How Earth’s Record Breaking Intense Heat Wave Impacted Life In Antarctica

by Keith Cowing

Summer 2024 is on track to be the hottest on record for hundreds of cities across the U.S. and globe. Even in Antarctica, during the peak of its winter, extreme […]

Posted inAnalog Studies, Arctic / Antarctic / Alpine, Away Teams & Field Reports, Biosignatures & Paleobiology, Exploration Gear & Tech, Extremeophiles and Extreme Environments, Genomics, Proteomics, Bioinformatics, Habitable Zones, Icy Worlds, Microbiology & Virology, Polar / Alpine Expeditions, Status Report

Active Microbiota Persist in Dry Permafrost and Active Layer from Elephant Head, AntarcticaI

by Keith Cowing

Dry permafrost is a challenging environment for microbial life due to cold, dry, and often oligotrophic conditions. In 2016, Elephant Head, Antarctica, was confirmed as the second site on Earth […]

Posted inAnalog Studies, Arctic / Antarctic / Alpine, Desert Worlds, Extremeophiles and Extreme Environments, Mars, Microbiology & Virology, Status Report

Novel Endolithic Bacteria Of phylum Chloroflexota Reveal A Myriad Of Potential Survival Strategies In The Antarctic Desert

by Keith Cowing

The ice-free McMurdo Dry Valleys of Antarctica are dominated by nutrient-poor mineral soil and rocky outcrops. The principal habitat for microorganisms is within rocks (endolithic).

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