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…
NASA’s Roman Mission Preps to Unveil New Populations of Faraway Worlds
This plot shows currently known exoplanets, with different categories highlighted. Roman will help fill in the bottom-right of…
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…
Phase-Space Crystallization in Galactic Globular Clusters: A Gaia-Based Metric and Implications for Technosignature Searches
Correlations of crystallization metrics with cluster mass, Galactocentric distance, and a dynamical-age proxy. Top row: Cindex versus log(Mcl/M⊙),…
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…
Here’s where NASA is looking for alien life in our solar system
“If you ask the question—how complicated can non-biological chemistry get?—the answer is biological chemistry, because biological chemistry comes…