![A comparison of the dominant heating and cooling mechanism for different times and at the time of the maximum temperature. Each model is started at 𝑇 = 10 K. -- [astro-ph.GA]](https://i0.wp.com/astrobiology.com/wp-content/uploads/2026/10/UCLCHEM.png?resize=1200%2C716&ssl=1)
[astro-ph.GA] Astrochemical modeling is a key tool for the understanding of the formation and destruction of molecules in the dense gas of the interstellar medium, as observed by modern day […]
Astrochemistry
Posted inTitan
Detection Of Hydrocarbons In Titan Using High-resolution Cross-correlation Spectroscopy
[astro-ph.EP]. High-resolution cross-correlation spectroscopy (HRCCS) is a powerful technique for detecting molecules whose individual spectral lines are too weak to be identified directly, but its sensitivity is limited by the […]
![Illustration of the spatial distribution and proposed origin of the molecular species discussed in this work, including the tentative FeS emission. Left: H2O v2 = 1 and NaCl emission maps toward Orion SrcI reported by A. Ginsburg et al. (2018). Right: schematic view of the proposed distinction between species associated with the outflow and those tracing the disk midplane, based on the results presented here (Table 1) and those of A. Ginsburg et al. (2018, 2019). -- [astro-ph.GA]](https://i0.wp.com/astrobiology.com/wp-content/uploads/2026/10/Tentative-Detection.png?resize=1200%2C719&ssl=1)
Posted inAstrochemistry
Tentative Detection of FeS toward Orion SrcI
[astro-ph.GA] Iron sulfide (FeS) is a key refractory compound in astrophysical environments. It is commonly found in meteorites and evidence of FeS has only been reported in solid form in […]
Posted inAstrochemistry
Chemical Abundance Patterns at z=1-7: Carbon, Nitrogen, Neon, Sulphur, and Argon Abundances From JWST Spectroscopy
[astro-ph.GA] The relative abundances of chemical elements in the interstellar medium (ISM) trace the history of star formation and chemical enrichment in galaxies.
Posted inAstrochemistry
How Fluctuations Control Chiral Symmetry Breaking in Reacting Mixtures of Chiral Molecules
[cond-mat.soft] The pronounced chiral asymmetry of biomolecules is a defining feature of living systems, yet the mechanisms by which such asymmetry emerged remain unresolved. Chiral symmetry breaking may have occurred […]
Posted inAstrochemistry
Intimate Link Between Prebiotic Chemistry And Meteorites: Mechanisms Of Organic Molecule Formation
[Astrobiology (Journal) via PubMed] Whether meteorites brought ingredients necessary for the origin of life exogenously or they were produced endogenously on early Earth, having a prebiotic chemical inventory of organic […]
Posted inBiosignatures & Paleobiology
From Searching For Extraterrestrial Biosignatures To Exploring The Origins Of Life: A Prebiotic Chemistry Perspective
[Fundamental Research]. The search for extraterrestrial life represents one of humanity’s most profound scientific endeavors. This review examines the role of prebiotic chemistry in our quest to detect extraterrestrial life.
Posted inInterstellar
Assessment Of The Mass Loss And Radius Change Of 3I/ATLAS Based On Observed Production Rates
[astro-ph.EP] Formed from the debris of planet formation, interstellar comets provide invaluable insights into the chemical compositions of planetary systems outside of our Solar System.
Posted inAstrochemistry
Resolving The Extended Interstellar Medium Of Infrared Galaxies I. Polycyclic Aromatic Hydrocarbon Emission
[astro-ph.GA] We investigate spatial variations in polycyclic aromatic hydrocarbon (PAH) properties and photoelectric heating efficiency in 67 nearby luminous infrared galaxies from the Great Observatories All-sky LIRG Survey (GOALS).
Posted inBiophysics
Water As We’ve Never Known It: Testing Water Beyond Earth-like Conditions
[UNLV] Water isn’t always as it seems. Under extreme conditions, such as those found on other planets, it has been discovered to change its atomic structure, giving it the means […]