Ethylene glycol ((CH2OH)2, hereafter EG) and Glycolonitrile (HOCH2CN, hereafter GN) are considered molecular precursors of nucleic acids.
A new study suggests a habitable past and signs of ancient microbial processes on Mars – and Imperial scientists provided crucial context.
NASA’s Perseverance Rover spent three years exploring the floor of Jezero Crater, located just north of the Martian equator.
The Rosalind Franklin mission’s chance of finding evidence of past life on Mars has been boosted by two studies that show that the rover won’t have to travel far to […]
In the search for life in the Universe, molecular oxygen (O2) combined with a reducing species, such as methane (CH4), is considered a promising disequilibrium biosignature.
![Observational data on the relative surface temperatures of the Earth and Mars Ts/Ts0 (upper left panel) vs. the theoretical predictions by a few cosmological models at various values of the Hubble parameter normalized to h = 100 km/s/Mpc (dotted curves in three other panels). Solid curves correspond to the standard intergalactic value of the Hubble parameter; and the long-dashed curves, to the original Kˇr´ıˇzek–Somer model [16, 21]. -- astro-ph.EP](https://i0.wp.com/astrobiology.com/wp-content/uploads/2025/08/Estimating-The-Local-Hubble-Parameter.png?resize=1200%2C716&ssl=1)
The problem of local (e.g., interplanetary) Hubble expansion is studied for a long time but remains a controversial subject till now; and of particular interest is a plausible value of […]
We determined the metal/silicate partition coefficients of hydrogen and carbon, DH and DC, simultaneously under typical conditions of Earth’s core formation.
Exoplanet Mass And Radius Inferences Fundamentally Rely On Host Star Mass And Radius Inferences.
![LEFT: Predicted 22Ne mass fraction as a function of metallicity for the WD remnants of stars in the Hypatia Catalog (Hinkel et al. 2014). The colors represent [N/H] for the same stars. MIDDLE and RIGHT: C and N abundances of the same stars from the Hypatia Catalog. The color bars represent the predicted neon mass fraction, X(22Ne), in their remnants. Two chemically peculiar low-metallicity objects, BD+80 245 and HD 19445, are labeled and marked as stars. -- astro-ph.SR](https://i0.wp.com/astrobiology.com/wp-content/uploads/2025/08/The-Fraction-of-Distilled.png?resize=1200%2C699&ssl=1)
After carbon and oxygen, 22Ne is the most abundant element in white dwarf interiors. As C/O white dwarfs (WDs) crystallize, they are predicted to go through a distillation process in […]
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) […]
