Europa, a moon of Jupiter, and Enceladus, a moon of Saturn, have evidence of oceans beneath their ice crusts. A NASA experiment suggests that if these oceans support life, signatures […]
Water/Hycean Worlds & Oceanography
Resilience of Snowball Earth to Stochastic Events
Earth went through at least two periods of global glaciation (i.e., “Snowball Earth” states) during the Neoproterozoic, the shortest of which (the Marinoan) may not have lasted sufficiently long for […]
The Deep-ocean Floor Produces Its Own Oxygen
An international team of researchers, including a Northwestern University chemist, has discovered that metallic minerals on the deep-ocean floor produce oxygen — 13,000 feet below the surface.
Microbial Structures In An Antarctic Lake Could Reveal More About How Life Evolved
By Emma Caton — In the depths of remote Antarctic lakes, communities of microorganisms are thriving where few life forms can survive.
The Role of Hydrodynamics For The Spatial Distribution of High-temperature Hydrothermal Vent-endemic Fauna in the Deep Ocean Environment
Active hydrothermal vents provide the surrounding submarine environment with substantial amounts of matter and energy, thus serving as important habitats for diverse megabenthic communities in the deep ocean and constituting […]
Tricorder Tech: Biosignature Preparation For Ocean Worlds (BioPOW) Instrument Prototype
In situ sampling missions to detect biosignatures on ocean worlds requires thorough sample preparation to manage the expected chemical complexity of such environments. Proposed instruments must be capable of automatic […]
Ice Planet Update: New Tipping Point Discovered Beneath Earth’s Antarctic Ice Sheet
A new and worrying way that large ice sheets can melt has been characterised by scientists for the first time. The research focuses on how relatively warm seawater can lap […]
A Large Biosignature Visible From Space: Phytoplankton Bloom Near Greenland
Editor’s note: with the future advent of powerful telescopes that may be able to resolve habitable worlds in images composed of a few pixels, large biological phenomena such as algal […]
Setting The Stage For The Search For Life With The Habitable Worlds Observatory: Properties Of 164 Promising Planet-survey Targets
The Decadal Survey on Astronomy and Astrophysics 2020 has recommended that NASA realize a large IR/optical/UV space telescope optimized for high-contrast imaging and spectroscopy of ∼25 exo-Earths and transformative general […]
The Guaymas Basin – A Hot Spot For Hydrothermal Generation And Anaerobic Microbial Degradation Of Hydrocarbons
Guaymas Basin is a young marginal rift basin in the Gulf of California characterized by active seafloor spreading, rapid deposition of organic-rich sediments, and steep geothermal gradients where sedimentary organic […]
