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astronomy
Posted inSETI & Technosignatures
The VLA and High-Frequency SETI: Expanding The Search for Life
[astro-ph.IM] The Commensal Open-Source Multimode Interferometer Cluster (COSMIC) runs software that searches for technologies elsewhere in the Universe (“technosignatures”) using the Karl G. Jansky Very Large Array (VLA). Specifically, it […]
![Schematic of generative process to determine most chemically relevant molecular candidates for the unassigned spectroscopic transitions.-- [astro-ph.GA]](https://i0.wp.com/astrobiology.com/wp-content/uploads/2026/08/Automated.png?resize=1200%2C711&ssl=1)
Posted inAstrochemistry
Automated Assignment and Prediction of Molecules in Astronomical Line Surveys Using Machine-Learning-Based Chemical Embeddings
[astro-ph.GA] Modern radio telescopes generate vast amounts of observational data, offering valuable insights into the molecular composition of interstellar sources. Identifying the molecules within these datasets typically involves time-consuming and […]
Posted inSETI & Technosignatures
International Law and the Search for Extraterrestrial Intelligence
[Proceedings of the IAU]. The search for extraterrestrial life, especially intelligent life, is among the most profound scientific endeavors.
![Simulations of the external planets’ (d to h) contributions at the times of JWST observations (represented in color over the bare rocks total curve). Relative fluxes were simulated using the SPHINX spectrum at 12.8 microns. The contributions of each planet are shown in colored dotted lines and the case of all planets with thick atmospheres in dashed grey. The total phase curves correspond to the total contribution of the external planets. Eclipses are displayed but not transits. Visit 1 of GTO 1279 is not displayed as the observational strategy from this visit was different from the others and less precise (Ducrot et al. 2024) -- [astro-ph.EP]](https://i0.wp.com/astrobiology.com/wp-content/uploads/2026/08/Looking.png?resize=1200%2C717&ssl=1)
Posted inTRAPPIST-1
Looking For TRAPPIST-1 External Planets’ Emission In JWST Archival Data
[astro-ph.EP] The TRAPPIST-1 system has been thoroughly observed with JWST. Unfortunately, stellar contamination issues strongly limit the interpretation of transit observations.
![The top panel shows comparisons of the observed spectrum of JADES-GS-BD-11 (black with grey 1σ error bars) and the median retrieved spectrum for both the PH3 and non-PH3 petitRADTRANS (red and green, respectively, with 1σ central credible intervals shaded around the median). The bottom panel shows the difference between the retrieved and observed spectra, divided by the observed uncertainty. The two retrieved median spectra are generally within 1σ of each other everywhere except at 4.3 µm (the Q-branch of the PH3 feature).-- [astro-ph.SR]](https://i0.wp.com/astrobiology.com/wp-content/uploads/2026/08/JWSTNIRSpec.png?resize=1200%2C717&ssl=1)
Posted inBrown Dwarfs
JWST/NIRSpec Spectra for Three Ultracool Brown Dwarfs Detected in Extragalactic Surveys: Further Evidence for Phosphine Absorption
[astro-ph.SR] We present JWST NIRSpec prism spectra for three ultracool brown dwarfs discovered in extragalactic survey data, two from the JWST Advanced Deep Extragalactic Survey (JADES), and one from Public […]
Diplomado en Educación Científica – Instituto de Astrobiología de Colombia
Diplomado en Educación Científica (Diploma in Science Education) Énfasis en Ciencias Planetarias (Planetary Science Emphasis) Una experiencia académica que integra ciencia, educación, inteligencia artificial, astronomía, astrobiología, astrofísica y exploración espacial. […]
![Left panel: Toomre diagram for the stars in our sample, color-coded by the TD/D value. Right panel: cumulative distribution function (CDF) of the TD/D values for stars with planetary systems classified into different categories. A system with at least one planet pair that is identified as plausible 1st-order (2nd-order) resonance by HS24 is labeled “w/ 1st MMR” (“w/ 2nd MMR”). The category, “w/ 1st MMR & Pin < 3 d”, corresponds approximately to the stars with plausibly 1st-order resonant and tidal decay timescale τe < 20 Myr in HS24. “USP” is the sample of planetary systems hosting ultra-short-period planets as identified in Schmidt et al. (2024).-- [astro-ph.EP]](https://i0.wp.com/astrobiology.com/wp-content/uploads/2026/08/Are-Near.png?resize=1200%2C720&ssl=1)
Posted inExoplanets, -moons, -comets
Are Near Resonant Multiple-planet Systems From Kepler Young?
[astro-ph.EP] Recent studies have claimed that Kepler multi-planet systems hosting near-resonant planet pairs—particularly those near second-order mean-motion resonances (MMRs)—exhibit smaller stellar velocity dispersions than the general population of Kepler planet […]
![CH Ind timing and inference. Top: the six differential nodes 𝐷 from equation (1); subtracting primary and secondary O–C values removes their common ephemeris or LTTE trend and isolates the first-order apsidal signal. Bottom: Monte Carlo posteriors for the displayed 0.08-dex common log 𝑘2 systematic; horizontal segments show central 68 per cent intervals.-- [astro-ph.EP]](https://i0.wp.com/astrobiology.com/wp-content/uploads/2026/08/Stellar-Tidal.png?resize=1200%2C718&ssl=1)
Posted inStellar Cartography
Stellar Tidal Systematics In Apsidal-motion Searches For Circumbinary Planets: CH Ind And SW CMa
[astro-ph.EP] Thornton et al. (2026) reported 27 non-transiting circumbinary-planet candidates from excess apsidal motion in TESS eclipsing-binary timings. The classical stellar contribution is sensitive to target-specific radii, apsidal constants k2, […]
Posted inPress Release
Habitable Worlds Observatory’s Concept and Technology Maturation: Initial Feasibility and Trade Space Exploration
[astro-ph.IM] The Habitable Worlds Observatory is the first telescope ever designed to search for life and will be a powerhouse of discovery across topics in astrophysics.