[Helmholtz Centre for Ocean Research Kiel (GEOMAR)] Polymetallic nodules form at a snail’s pace. They grow about one to two millimetres over the course of a million years. If buried […]
Oceanography
Posted inSample Return
An Interdisciplinary Approach To Sampling Hard Rock Cores Of The Oceanic Crust For Microbiological And Biogeochemical Research
[Scientific Drilling] Studying life in the deep, rocky subseafloor involves many layers of technological and methodological challenges, and each drilling project or expedition must make a series of choices to […]
Posted inMicrobiology & Virology
Assessing the Preservation of Polysaccharides from a Sea-Ice Bacterium Through Analog Icy Moon Plume Ejection
[Astrobiology (Journal)] Detection of complex organics emitted from Saturn’s moon Enceladus has intensified the search for biosignatures accessible to future missions.
Posted inBiogeochemical Cycles & Geobiology
Activity And Diversity Of Sulfate- and Methane-based Pathways Of Anaerobic Chitin And N-acetylglucosamine Degradation In Marine Sediments
[American Society of Microbiology] Sulfate reduction is estimated to account for half of the organic carbon respiration in anoxic, organic-rich ocean sediments. Sulfate-reducing microorganisms (SRMs) typically oxidize simple carbon compounds, […]
Posted inAtmospheres, Climate, Weather
Ancient Seas Reveal Times When The Earth Rapidly Shifted Relative To Its Axis
[AAAS] Ancient sea-level changes provide new evidence that during the Jurassic and Cretaceous, Earth underwent episodes of rapid “true polar wander” (TPW).
Posted inMicrobiology & Virology
Near-infrared Confocal Imaging Reveals The Spatial Organisation Of Far-red Photosynthesis In Shark Bay Microbial Mats And Halomicronema sp,
[Journal of Microscopy] Far-red light (FRL) cyanobacteria occupy spectrally filtered habitats where visible wavelengths are depleted but far-red radiation persists.
Posted inWater/Hycean Worlds & Oceanography
How Ocean Chemistry On Earth Helped Life Keep Breathing
[UC Riverside] Scientists have helped solve a longstanding mystery about how Earth remained habitable after oxygen first accumulated in its atmosphere more than 2 billion years ago, providing evidence that […]
Posted inHabitable Zones
Virus-integrated Laboratory Models For Habitability Studies Of Enceladus, Europa, And Titan
[Journal of Virology]. Biogeochemical models have become critical for answering questions about the habitability of ocean worlds, especially that of early Earth.
Posted inWater/Hycean Worlds & Oceanography
Water Planet Recon: How Accurately Can We Measure Earth Ocean’s Deepest Point?
[Research Organization of Information and Systems]. How deep is the deepest ocean—and how precisely can we actually measure it? Bathymetric maps obtained by each sounding at various survey speeds and […]
Posted inAway Teams & Field Reports
Ice Planet Exploration: Tara Polaris I Expedition
[ESA] Soon to be frozen in space and time, this alien-looking vessel is beginning its first mission into drifting ice in the Arctic Ocean. A dozen people won’t leave it […]