aerobic phototrophic methanotroph Archives

A schematic illustration of the geological and geochemical characteristics of the pre-biotic Earth. The important characteristics include: the nearly-completely ocean-covered Earth; the continental crust mostly submerged in the oceans; the degassing of gases/fluids to the oceans mostly by reducing submarine hydrothermal fluids; the H2–CH4–NH3-rich atmosphere; the Fe–S–H+-poor oceans; the origin and evolution of life on ocean islands; and an organic haze layer for the protection of life from UV radiation from the sun. -- Scientific Reports

Atmospheres, Climate, Weather, Biochemistry & Organic Chemistry, Biogeochemical Cycles & Geobiology, Biosignatures & Paleobiology, Habitable Zones, Origin & Evolution of Life, Status Report

The Hydrogen, Methane And Ammonia Biosphere On Early Earth

by Keith CowingMay 4, 2026May 4, 2026

Current paradigms for the origin and evolutions of life and the environment on early Earth have been based on the premises that carbon dioxide (CO2) and nitrogen gas (N2) were […]

aerobic phototrophic methanotroph

The Hydrogen, Methane And Ammonia Biosphere On Early Earth

NASA Establishes Mars Forward Operational Risk and Contamination Evaluation (M-FORCE) Tiger Team to Shape Mars Planetary Protection Protocols

Opportunity to Contribute to NASA DARES Community White Paper on Phototrophic Biosignatures

The Search For Life Elsewhere: Avoiding Hype and Fostering Public Understanding

Panchromatic Spectra of Nearby Low-mass and Sun-like Stars with Directly Imageable Habitable Zones

Alfred: A Flexible, User-Friendly Python Package for Exoplanet Confirmation