Reflections of Life: Distinguishing Living from Nonliving Worlds with Complexity Metrics
Biosignatures & Paleobiology Status Report The Astronomical Journal June 14, 2026 Analysis pipeline employed in the present work.…
Ultraviolet-Driven Atmospheric Degeneracies Challenge Conventional Biosignature Frameworks for Terrestrial Planets with Ultracool M Dwarf Hosts: An Archean-Analog TRAPPIST-1 e Case Study
Comparison of input SEDs used in this study and molecular photoabsorption cross sections relevant to Archean-analog photochemistry. The…
Forgotten Fossil Helps Rewrite Part Of Animal Evolution
Depiction of Magnicornaspis garwoodi gen. et sp. nov. USNM PAL 801575. A Complete specimen. Boxes with solid lines…
Orbital Biosignature Recon: NASA-developed AI Could Help Track Harmful Algae
A depiction of the full product generation pipeline for a single OC instrument + TROPOSIF data stream. Each…
HWO Target Stars and Systems: Activity and Rotation Catalog (ARC) of Potential Target Stars for the Habitable Worlds Observatory
Upper panels: Equatorial rotational velocity (veq) vs. projected rotational velocity (v sin i) for stars in Tiers 1,…
Titan’s Organic World – Astrobiology
Illustration of the thermal structure of Titan’s atmosphere and its atmospheric processes. It illustrates the high-altitude photochemistry of…
Methanogens Through Time and Space: Impact on Earth’s Planetary Evolution and Biogeochemistry
The multiple roles of methanogens in the modern-day carbon cycle. Processes shown in red contribute to greenhouse gas…
Organosulfur Chemistry On sub-Neptunes: Implications For Hazes And Biosignatures
The network of important reactions for the carbon, sulfur, and coupled organosulfur chemistry in the atmosphere of K2-18b.…
Searching For Life-As-We-Don’t-Know-It: Mission-relevant Application of Assembly Theory For Exoplanet Life Detection
Potentially habitable worlds – Grok via Astrobiology.com This white paper introduces a framework for applying Assembly Theory (AT)…
Biologists ‘Resurrect’ 3.2-Billion-Year-Old Enzyme | Sci.News
A team of researchers led by the University of Wisconsin-Madison has reverse-engineered a primordial nitrogen-fixing enzyme, illuminating how…