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space life science - Astrobiology.com

Astrobiology (general), Biosignatures & Paleobiology, Genomics, Proteomics, Bioinformatics, Habitable Zones, Space Life Science

Reflections on Keywords: Definition, Life and Origin

by Keith CowingSeptember 28, 2025September 28, 2025

Cross-section of an egg-shaped iron oxide stone: It holds information about the amount of organic carbon in the sea millions of years ago, much like a time capsule. (Image: Nir Galili /ETH Zurich)

Atmospheres, Climate, Weather, Biogeochemical Cycles & Geobiology, Biosignatures & Paleobiology, Fossils & Paleontology, Origin & Evolution of Life, Water/Hycean Worlds & Oceanography

Minute Witnesses From Earth’s Primordial Sea

by Keith CowingSeptember 26, 2025September 26, 2025

Graphical Abstract -- Journal of Molecular Biology

Biochemistry & Organic Chemistry, Genomics, Proteomics, Bioinformatics, Origin & Evolution of Life

Tracing The Origin Of Earth Life’s Genetic Code To Early Protein Structures

by Keith CowingSeptember 17, 2025

The four helices conserved across the Lipocone superfamily constitute a cone-like structure, with the helices tending to coalesce on one end and open out into a pocket on the other, lined by the conserved sequence positions. Image credit: Burroughs, Nicastro and L. Aravind (CC BY 4.0)

Biochemistry & Organic Chemistry, Genomics, Proteomics, Bioinformatics, Origin & Evolution of Life

Origins Of Wnt Signalling Reveals A Protein Superfamily Across The Tree of Life

by Keith CowingSeptember 11, 2025September 18, 2025

Prebiotic Chemistry on Early Earth - Grok via Astrobiology.com

Atmospheres, Climate, Weather, Biochemistry & Organic Chemistry, Biophysics, Biosignatures & Paleobiology, Genomics, Proteomics, Bioinformatics, Origin & Evolution of Life

From Polymerization-Enabled Folding and Assembly to Chemical Evolution: Key Processes for Emergence of Functional Polymers in the Origin of Life

by Keith CowingSeptember 8, 2025September 8, 2025

Stockholm University

Genomics, Proteomics, Bioinformatics, Microbiology & Virology, Origin & Evolution of Life, Plant Biology

Partnership Between Algae And Bacteria Reveals Secrets Of Evolution

by Keith CowingSeptember 3, 2025September 3, 2025

Modelling of homogeneous accretion & multi-stage core formation (all models considering the delivery of water and carbon from the beginning of Earth accretion). Similar to Fig. 6a except that calculated core concentrations of H and C (black dotted and broken lines, respectively) and those required to explain the outer core density deficit when TICB = 6000 K (red curve), 5400 K (green) and 4800 K (right blue) are given in the right panel for each model. H2O and C concentrations in each non-carbonaceous (red) and carbonaceous chondrite (blue) are also shown. See text for more details. -- astro-ph.EP

Astrogeology, Atmospheres, Climate, Weather, Biochemistry & Organic Chemistry, Biogeochemical Cycles & Geobiology, Biosignatures & Paleobiology

Core-mantle Partitioning And The Bulk Earth Abundances Of Hydrogen And Carbon: Implications For Their Origins

by Keith CowingAugust 27, 2025August 27, 2025

Spread of niche constructors across a metapopulation through diffusion This simulation introduces the diffusion of units across microenvironments.

Biochemistry & Organic Chemistry, Biophysics, Biosignatures & Paleobiology, Microbiology & Virology, Nanotechnology & SynBio, Origin & Evolution of Life

A Niche Construction-based Perspective On Chemical Evolution Before Replication And Reproduction

by Keith CowingAugust 4, 2025August 4, 2025

The core (gold and black) and surface (silver) residues that were randomised Credit Albert Escobedo/Centro de Regulación Genómica

Astropharmacy / Biotechnology, Biochemistry & Organic Chemistry, Biophysics, Biosignatures & Paleobiology, Commercial & Private Sector, Genomics, Proteomics, Bioinformatics, Nanotechnology & SynBio

One Billion-year-old Rules Of Protein Stability Revealed

by Keith CowingJuly 25, 2025

A new species of priapulids, also known as penis or cactus worms, which were widespread during the Cambrian but are nearly extinct today. The Grand Canyon priapulid had hundreds of complex branching teeth, which helped it sweep food particles into its extensible mouth. Due to the size of the fossil and its exotic rows of teeth, the researchers named this new animal Kraytdraco spectatus, after the krayt dragon, a fictional creature from the Star Wars universe. Credit Rhydian Evans

Biogeochemical Cycles & Geobiology, Biosignatures & Paleobiology, Fossils & Paleontology, Mapping, Geodesy, Cartography, Origin & Evolution of Life, Sample Return, Science Fiction

New Grand Canyon Fossils Show The Evolution Of Early Animals On Earth

by Keith CowingJuly 24, 2025July 24, 2025