![Magnetite formation under prebiotically plausible conditions. a Envisioned evaporative lake setting on early Earth, where magnetite likely formed via authigenic precipitation facilitated either by solar irradiation or nitrogen oxide from the decomposition of abiotic nitrogen fixation products [62]. As these magnetite particles form, they acquire a natural remanent magnetization under the geomagnetic field. b Experimental setup used to reproduce early Earth conditions and investigate magnetite formation under UV-facilitated synthesis (samples UV1 to UV3) and c via nitrite oxidation of Fe(II) (samples NUV8 and NUV9). Samples NUV5 to NUV7 were synthesized by mixing Fe(II) and Fe(III) with different proportions (10%/90%, 50%/50% and 90%/10% of Fe(II)/Fe(III), respectively). -- physics.chem-ph](https://i0.wp.com/astrobiology.com/wp-content/uploads/2026/05/Prebiotic-magnetite.png?resize=1200%2C721&ssl=1)
The emergence of biomolecular homochirality requires both an initial symmetry-breaking event and a mechanism to amplify and preserve a chiral imbalance.
prebiotic chemistry
Posted inBiochemistry & Organic Chemistry, Biophysics, Biosignatures & Paleobiology, Genomics, Proteomics, Bioinformatics, Microbiology & Virology, Origin & Evolution of Life, People Of Astrobiology, Status Report
Liquid–liquid Phase Separation As A Driver Of Abiogenesis And Evolution
The origin of life may have emerged through physical mechanisms that enable molecular organization and self-assembly. Building on Alexander Oparin’s concept of coacervate droplets, liquid–liquid phase separation (LLPS) offers a […]
Posted inBiochemistry & Organic Chemistry, Biogeochemical Cycles & Geobiology, Biophysics, Biosignatures & Paleobiology, Extremeophiles and Extreme Environments, Genomics, Proteomics, Bioinformatics, Habitable Zones, Imaging & Spectroscopy, Microbiology & Virology, Origin & Evolution of Life, Sample Return, Status Report
Analytical Characterization Approaches to Measure Prebiotically Relevant Compounds in High Salinity Impact-Induced Hydrothermal Systems
Experiments exploring potential emergence-of-life chemistry in a laboratory setting critically depend on simulating realistic early-Earth environments. Such experimental conditions include the implementation of controlled high temperatures and pressures, anoxic gas […]
Posted inBiochemistry & Organic Chemistry, Genomics, Proteomics, Bioinformatics, Imaging & Spectroscopy, Origin & Evolution of Life, Status Report, Water/Hycean Worlds & Oceanography
Novel Chemical Pathways For The Formation Of Nucleobase Precursors Via Benzene π-Bond Addition To HCN
We propose a simple and efficient pathway for the formation of precursors to core nucleobases in DNA and RNA using a suite of computational chemistry methods.
Posted inAtmospheres, Climate, Weather, Biochemistry & Organic Chemistry, Biophysics, Biosignatures & Paleobiology, Genomics, Proteomics, Bioinformatics, Habitable Zones, Origin & Evolution of Life, Status Report, Water/Hycean Worlds & Oceanography
A Clue For The Hen And Egg Question: The Simultaneous Formation Of Uracil And Amino Acids Under Simulated Hadean Conditions
The origin of life is commonly discussed within two competing conceptual frameworks: the metabolism-first and information-first hypotheses. While each emphasizes a different defining property of early life, modern biochemistry reveals […]
Posted inBiochemistry & Organic Chemistry, Biogeochemical Cycles & Geobiology, Biophysics, Biosignatures & Paleobiology, Genomics, Proteomics, Bioinformatics, Nanotechnology & SynBio, Origin & Evolution of Life, Press Release
Shedding Light On How Hydrogen Cyanide Formed On Early Earth
Manganese dioxide can convert amino acids into hydrogen cyanide (HCN) without requiring methane, solving a long-standing puzzle about the origin of this key prebiotic molecule on early Earth, as reported […]
Posted inAtmospheres, Climate, Weather, Biochemistry & Organic Chemistry, Biogeochemical Cycles & Geobiology, Biosignatures & Paleobiology, Genomics, Proteomics, Bioinformatics, Habitable Zones, Origin & Evolution of Life, Press Release
Showing The Math For Earth’s First — And Sudden — Spark Of Life
Isolating the first spark of life on Earth is a matter of biology, geology, and chemistry — but it’s also an amazing math problem. At least, that’s how Varun Varanasi […]
Posted inBiophysics, Exoplanets, -moons, -comets, Gaia - Planetary Perspectives, Habitable Zones, Radiation, Space Weather & Heliophysics, Status Report
Flare-driven Habitability: Expanding Life’s Potential Around Low-mass Stars
The traditional definition of the circumstellar habitable zone (HZ) focuses on liquid water, but neglects the crucial role of ultraviolet (UV) radiation in prebiotic chemistry.
Posted inAtmospheres, Climate, Weather, Biochemistry & Organic Chemistry, Biogeochemical Cycles & Geobiology, Biosignatures & Paleobiology, Habitable Zones, Icy Worlds, Imaging & Spectroscopy, Missions & Hardware, Robotics/Rovers/UAVs, Status Report, Titan, Water/Hycean Worlds & Oceanography
Science Goals and Objectives for the Dragonfly Titan Rotorcraft Relocatable Lander
NASA’s Dragonfly mission will send a rotorcraft lander to the surface of Titan in the mid-2030s. Dragonfly’s science themes include investigation of Titan’s prebiotic chemistry, habitability, and potential chemical biosignatures […]
Posted inBiochemistry & Organic Chemistry, Biogeochemical Cycles & Geobiology, Biosignatures & Paleobiology, Caves, Craters, Mountains, Subsurface, Lava Tubes, Habitable Zones, Icy Worlds, Imaging & Spectroscopy, Mapping, Geodesy, Cartography, Bathymetry, Missions & Hardware, Origin & Evolution of Life, Robotics/Rovers/UAVs, Status Report, Titan, Tricorders & Sensors
Prebiotic Chemistry Insights for Dragonfly II: Thermodynamic Favorability of Nucleobases, Ribose, and Fatty Acids in Selk Crater on Titan
Saturn’s moon Titan is a prime destination for investigating prebiotic chemistry beyond Earth, particularly at impact crater sites where transient liquid water may have enabled aqueous reactions between organic molecules.