[Penn State]. A team of Penn State scientists has discovered a new ultra-small species of bacteria that has survived for more than 120,000 years within the ice of a Greenland […]
Biosignatures & Paleobiology
![Apple laptop being used by Wayne Pollard to communicate via satellite dish. [Photo: Dale Andersen]](https://i0.wp.com/astrobiology.com/wp-content/uploads/2024/04/mac.dish_.lrg_.jpg?resize=1200%2C720&ssl=1)
Posted inAnalog Studies, Arctic / Antarctic / Alpine, Away Teams & Field Reports, Biosignatures & Paleobiology, Cryobiology, Dale Andersen's Field Reports, Exploration Gear & Tech, Extremeophiles and Extreme Environments, Icy Worlds, Polar / Alpine Expeditions, Status Report
McGill High Arctic Research Station (MARS) Status Report: 16 April 2008
Dale Andersen: Here are a few more pictures and words for you regarding the CSA/McGill University Satellite system here at the CSA camp at Expedition Fiord on Axel Heiberg. Note […]
![Aerial view of McGill Arctic Research Station (MARS) located at 79 deg 26′ N, 90 deg 46’W [Photo credit: Dale Andersen]](https://i0.wp.com/astrobiology.com/wp-content/uploads/2024/04/andersen.12apr08.2.jpg?resize=1200%2C719&ssl=1)
Posted inAnalog Studies, Arctic / Antarctic / Alpine, Away Teams & Field Reports, Biosignatures & Paleobiology, Dale Andersen's Field Reports, Exoplanets, -moons, -comets, Exploration Gear & Tech, Icy Worlds, Polar / Alpine Expeditions, Status Report
McGill High Arctic Research Station (MARS) Status Report: 12 April 2008
Dale Andersen: The photos here were taken yesterday (satellite receiver) and last week (aerial of the CSA camp). More when time permits. I have to go hit the road via […]
Posted inBiosignatures & Paleobiology, Extremeophiles and Extreme Environments, Journal articles, Origin & Evolution of Life
Did Earthquakes Keep the Early Crust Habitable?
Astrobiology December 2007, 7(6): 1023-1032 http://www.liebertonline.com/doi/pdfplus/10.1089/ast.2006.0091 The shallow habitable region of cratonal crust deforms with a strain rate on the order of 1019 s1. This is rapid enough that small […]
Posted inAstrobiology (general), Biosignatures & Paleobiology, Origin & Evolution of Life
A Geobiological Perspective on the Emergence of Animal Life
Researchers from NAI’s University of Hawai’i Team and their colleagues have a new paper in Geobiology reviewing recent work on the climatic, geochemical, and ecological events that preceded animal fossils, […]
Posted inBiosignatures & Paleobiology
NSF Funding Opportunity: Paleo Perspectives on Climate Change (P2C2)
The goal of research funded under the interdisciplinary P2C2 solicitation is to utilize key geological, chemical, and biological records of climate system variability to provide insights into the mechanisms and […]
Posted inBiosignatures & Paleobiology, Origin & Evolution of Life
Oxygen in Earth's Atmosphere Before Great Oxidation Event
NAI’s Astrobiology Drilling Program supported researchers in 2004 to obtain subsurface core samples from the Hamersley Basin in Western Australia. Those samples, representing the time just before the Great Oxidation […]
Posted inBiosignatures & Paleobiology, Origin & Evolution of Life
Oxygen in Earth's Early Atmosphere
Researchers from NAI’s Carnegie Institution of Washington Team have a paper in Nature describing evidence that Earth’s Mesoarchean atmosphere (3.2 and 2.8 Gya) possessed very low amounts oxygen. These findings […]
Posted inBiosignatures & Paleobiology, Water/Hycean Worlds & Oceanography
Microbial Population Structures in the Deep Marine Biosphere
NAI’s Marine Biological Laboratory Team has a new paper in Science detailing aspects of population structure for microbial communities at two neighboring hydrothermal vents. Using environmental DNA sequencing techniques, they […]
Posted inBiosignatures & Paleobiology, Origin & Evolution of Life
Subaerial Volcanoes Shift Oxygen Levels on Early Earth
Biomarkers in rocks prior to the rise in Earth’s atmospheric oxygen 2.5 billion years ago show cyanobacteria released oxygen at the same levels as today. What was happening to that […]