Time: June 18th, 8 AM PDT/11 AM EDT
geochemistry
Posted inAstrogeology, Biogeochemical Cycles & Geobiology, Biosignatures & Paleobiology, Exoplanets, -moons, -comets, Icy Worlds, Imaging & Spectroscopy, Mapping, Geodesy, Cartography, Bathymetry, Status Report
Planetary Tomography: Towards Imaging Earth’s Large-scale Structures By Directional Geoneutrino Detection With Ocean Bottom Detector
Editor’s note: when we start to examine other worlds more closely we are going to need tools that allow us to get the best possible understanding of those worlds’ construction […]
Posted inBiochemistry & Organic Chemistry, Biogeochemical Cycles & Geobiology, Biophysics, Biosignatures & Paleobiology, ROVs/Submersibles/Diving, Sample Return, Status Report, Water/Hycean Worlds & Oceanography
Charge-Selective Adsorption Of Organic Molecules In Microfluidic Mg(OH)2 Precipitate Membranes
The porous mineral structures of alkaline hydrothermal vent chimneys have been proposed as natural concentrators of dissolved organic molecules, potentially addressing the longstanding dilution problem in deep-sea origin-of-life hypotheses.
Posted inAnalog Studies, Astrogeology, Away Teams & Field Reports, Biogeochemical Cycles & Geobiology, Biosignatures & Paleobiology, Caves, Craters, Mountains, Subsurface, Lava Tubes, Desert Worlds, Exploration Gear & Tech, Mars, Status Report
Gorgona Island (Colombia) As A Terrestrial Analog Of Syrtis Major (Mars): Evidence From Geochemical Meta-analyses And Compositional Figures Of Merit
The identification of terrestrial analogs is a key strategy for advancing our understanding of the geological and geochemical evolution of Mars.
Posted inBiogeochemical Cycles & Geobiology, Biosignatures & Paleobiology, Genomics, Proteomics, Bioinformatics, Habitable Zones, Microbiology & Virology, Status Report
Microbial Growth Rates Captured Using Raman-SIP reveal A Highly Active Subsurface Biosphere Fueled By Serpentinization
Microbial productivity, metabolite fluxes, nutrient cycling and biosignatures are directly linked to microbial growth rates, which remain largely unknown in subsurface environments.
Posted inBiochemistry & Organic Chemistry, Biogeochemical Cycles & Geobiology, Biophysics, Biosignatures & Paleobiology, Origin & Evolution of Life, Press Release, Tricorders & Sensors
Elemental Stoichiometry As An Ecological Biosignature With Applications To Life Detection
The vast chemical space of possible small molecules, estimated at 1060 compounds for molecules composed of just C, N, O, and S, is only sparsely occupied by biology.
Posted inAway Teams & Field Reports, Biogeochemical Cycles & Geobiology, Biosignatures & Paleobiology, Extinction events, Fossils & Paleontology, Habitable Zones, Mapping, Geodesy, Cartography, Bathymetry, Origin & Evolution of Life, Press Release, Sample Return
Early Complex Earth Life Clung To Oxygenated Seafloors For Hundreds Of Millions Of Years
From the highest mountains to the deepest ocean, the driest desert to the lushest jungle, Earth displays a dazzling array of lifeforms. And eukaryotes account for many of these lifeforms, […]
Posted inBiogeochemical Cycles & Geobiology, Biophysics, Biosignatures & Paleobiology, Fossils & Paleontology, Imaging & Spectroscopy, Status Report
Tricks of Nature From the Ancient Earth and Early Mars: Chemical Gardens Generate Biomorphs With High Preservation Potential
Observations of morphology are commonly used to evaluate the biogenicity of terrestrial microfossils and could constitute a crucial line of evidence for extraterrestrial life‐detection missions in the future.
Posted inAstrochemistry, Astrogeology, Atmospheres, Climate, Weather, Biogeochemical Cycles & Geobiology, Fossils & Paleontology, Genomics, Proteomics, Bioinformatics, Habitable Zones, Origin & Evolution of Life, Press Release, Water/Hycean Worlds & Oceanography
How The Rise Of Continents May Have Set The Stage For Life On Earth
Earth’s earliest continents may have set the chemical stage for life by regulating boron levels in ancient oceans, a new study in Terra Nova suggests.
Posted inBiochemistry & Organic Chemistry, Biogeochemical Cycles & Geobiology, Biophysics, Biosignatures & Paleobiology, Genomics, Proteomics, Bioinformatics, Nanotechnology & SynBio, Origin & Evolution of Life, Press Release
Shedding Light On How Hydrogen Cyanide Formed On Early Earth
Manganese dioxide can convert amino acids into hydrogen cyanide (HCN) without requiring methane, solving a long-standing puzzle about the origin of this key prebiotic molecule on early Earth, as reported […]