chemical disequilibria Archives

Periodic table of elements and their nucleosynthesis. Biological utilisation of the elements and biometals (in orange and yellow) and their nucleosynthesis processes in the Universe are indicated. CHNOPS elements and elements used as electron donors/acceptors by biology are also reported. Iron and Manganese are the only biometals that not only serve as cofactors, but might also be used as metabolic substrates for redox reactions. -- astro-ph.EP

Astrochemistry, Astrogeology, Astropharmacy / Biotechnology, Atmospheres, Climate, Weather, Biosignatures & Paleobiology, Exoplanets, -moons, -comets, Imaging & Spectroscopy, Origin & Evolution of Life, Status Report

Stellar Metallicity Is A Key Parameter For The Search Of Life In The Universe

by Keith CowingAugust 19, 2025August 19, 2025

The search for Life in the Universe generally assumes three basic life’s needs: I) building block elements (i.e., CHNOPS), II) a solvent to life’s reactions (generally, liquid water) and III) […]

Biosignatures & Paleobiology, Imaging & Spectroscopy, Missions & Hardware, Press Release, Venus

Direct In-Situ Capture, Separation and Visualization of Biological Particles with Fluid-Screen in the Context of Venus Life Finder Mission Concept Study

by Keith CowingNovember 10, 2022November 10, 2022

Evidence of chemical disequilibria and other anomalous observations in the Venusian atmosphere motivate the search for life within the planet’s temperate clouds. To find signs of a Venusian aerial biosphere, […]