Philosophical Transactions of the Royal Society B: Biological Sciences via PubMed Archives - Astrobiology

Earthlinke exoplanets -- NASA

Exoplanets, -moons, -comets, Gaia - Planetary Perspectives, Habitable Zones, Status Report

Other Earths, Gaian bottlenecks and Darwinized Gaias

by Keith CowingSeptember 29, 2025September 29, 2025

In our galaxy, tens of billions of wet, rocky Earth-like planets orbit in the habitable zones of their host stars.

Emergence and complexification of metabolic proteins in three epochs. The foundations of metabolism started when a set of metallopeptides emerged through the spontaneous, thermodynamically driven selection of polymerizing amino acids bound to redox-active metal ions. These catalysts were the tipping point in the emergence of metabolism, giving rise to small metalloprotein folds and subsequent complex protein nanomachines. -- Philosophical Transactions of the Royal Society B: Biological Sciences via PubMed

Biochemistry & Organic Chemistry, Genomics, Proteomics, Bioinformatics, Microbiology & Virology, Origin & Evolution of Life, Status Report

On The Emergence Of Metabolism: The Evolution Of Proteins That Powered Life

by Keith CowingAugust 14, 2025August 14, 2025

Life is far from thermodynamic equilibrium. Hence, life must extract energy from the environment.

Exoplanet atmosphere -- NASA larger image

Atmospheres, Climate, Weather, Biochemistry & Organic Chemistry, Biosignatures & Paleobiology, Exoplanets, -moons, -comets, Habitable Zones, Origin & Evolution of Life, Status Report, Water/Hycean Worlds & Oceanography

The Diversity Of Exoplanetary Environments And The Search For Signs Of Life Beyond Earth

by Keith CowingAugust 8, 2025

Thousands of exoplanets orbit nearby stars, showcasing a remarkable diversity in mass, size and orbits.