[ALMA] Thanks to the extraordinary sharpness of ALMA’s images, a research team has discovered rings, grooves, and cavities in extremely compact disks surrounding young stars.
Stellar Cartography
![Full JWST spectrum of HOPS-68. We indicate the molecular absorption bands of oxygen-bearing molecules as studied in this work (SiO, H2O, CO2 and CO) and of carbon-bearing molecules as studied in paper B, as well as the most notable ice and silicate absorption features. Not indicated are 13CCH2, CS, and CH4 in the 7.3-7.8 µm region, and CH3, C4H2 and C6H2 around ∼ 16 µm, which will all be studied in paper B. Some prominent H2 emission lines are highlighted with a black arrow. HOPS-68 is not detected in continuum at wavelengths lower than 2.2 µm. The inset shows a zoom-in to the 7.8-8.6 µm region, which highlights the detection of SiO. -- [astro-ph.SR]](https://i0.wp.com/astrobiology.com/wp-content/uploads/2026/10/A-breath.png?resize=1200%2C558&ssl=1)
Posted inAstrochemistry
A Breath Of Fresh Air: Oxygen Enhancement From Silicate Sublimation During Early Protostellar Evolution
[astro-ph.SR] Recently, an analog to the t = 0 moment of our Solar System’s meteoritic record was identified for the first time around the Class I protostar HOPS-315.
![Activity-age relationship for solar-type stars from Pezzotti et al. (2026). HD 219134 is denoted by the green square. Kepler LEGACY data from Pezzotti et al. (2026) are shown as cyan dots, Booth et al. (2017) data are indicated by salmon pentagons, and the Sun is shown by a black circled dot. The black lines indicate the linear fit from Booth et al. (2017) (dashed line) and Pezzotti et al. (2026) (dotted line). -- [astro-ph.EP]](https://i0.wp.com/astrobiology.com/wp-content/uploads/2026/10/Detailed.png?resize=1200%2C718&ssl=1)
Posted inStellar Cartography
Detailed Study of HD 219134: A Benchmark K-dwarf With A Compact Planetary System
[astro-ph.EP] Space missions such as CoRoT, Kepler, and TESS have transformed asteroseismology and its synergies with exoplanet science.
![Architecture and workflow of AstroGenesis. Researchers interact with the system through a chatbot interface and select an appropriate DSRM corresponding to the astrophysical source class under investigation. Within the selected DSRM, a Supervisor Agent coordinates task execution through a Planner/Replanner and a set of specialized agents responsible for literature analysis, observational data retrieval, theoretical modeling, and research ideation. These agents operate using external tools which include, astrophysical tools, data-analysis modules, and pre-trained models to perform modeling of the data, etc. -- [astro-ph.IM]](https://i0.wp.com/astrobiology.com/wp-content/uploads/2026/10/AstroGenesis.png?resize=1200%2C722&ssl=1)
Posted inAI - Data - Apps - Cybernetics
AstroGenesis: A Domain-Specific Multi-Agent AI for Astrophysical Research
[astro-ph.IM] Modern astrophysical research requires the integration of rapidly expanding scientific literature, heterogeneous observational data, and increasingly complex physical models.
![Sky map of the Plato benchmark stars in Galactic coordinates. Different symbols indicate benchmark quality samples as defined in the text (Sect. 5.3). Symbol size increases with apparent brightness. -- [astro-ph.SR]](https://i0.wp.com/astrobiology.com/wp-content/uploads/2026/10/Plato-benchmark.png?resize=1200%2C719&ssl=1)
Posted inPLATO
Plato Benchmark Stars I. The Initial Benchmark Sample I
[astro-ph.SR] The ESA PLATO mission aims to detect and characterise Earth-size exoplanets orbiting bright, late-type stars using high-precision photometry and asteroseismology.
![Chemical clock relations for planet-hosting solar analogs, showing abundance ratios as a function of stellar age for [Y/Mg], [Y/Al], [Ba/Mg], [Ba/Al], [Sr/Mg], and [Y/(Mg+Al)/2]. Data points are color-coded by metallicity ([Fe/H]). Black lines show best-fit linear relations derived using Deming regression, accounting for uncertainties in both variables, and shaded regions indicate 1σ confidence intervals. All abundance ratios show statistically significant correlations with stellar age. -- [astro-ph.EP]](https://i0.wp.com/astrobiology.com/wp-content/uploads/2026/10/Planets-Around.png?resize=1200%2C720&ssl=1)
Posted inExoplanets, -moons, -comets
Planets Around Solar Twins/Analogs (PASTA) III: Chemical Clock Relations in Planet-Hosting Solar Analogs
[astro-ph.EP] Context. Abundance ratios between elements synthesized on different nucleosynthetic timescales provide empirical chemical clocks for estimating stellar ages, but robust calibrations require homogeneous samples with precise stellar parameters and […]
![Graphical Abstract -- [astro-ph.EP]](https://i0.wp.com/astrobiology.com/wp-content/uploads/2026/10/Space-Journey-Beyond-Earth.jpg?resize=1200%2C720&ssl=1)
Posted inExoplanets, -moons, -comets
Space Journey Beyond Earth: Exploring The Properties Of Exoplanets And Multi-planetary Systems
[astro-ph.EP]. In contrast to the observed exoplanet diversity, planets within many multi-planetary systems exhibit intra-system similarities in their radii, masses, and orbital spacings.
![D.2: Transit signals recovery analysis in the TESS light curve of TOI-210. TOI-210 b is shown in gold at its period of 9.01 days. Candidate planets at 2.15 and 3.76 days tentatively detected in the NIRPS RVs are indicated as lower limits, with arrows extending from minimum (iron density) to realistic (Earth density) radii based on their minimum masses. The expected transit depths fall within the TESS sensitivity, suggesting that if these RV signals are planets, they are unlikely to be transiting. -- [astro-ph.EP]](https://i0.wp.com/astrobiology.com/wp-content/uploads/2026/10/A-temperate.png?resize=1200%2C713&ssl=1)
Posted inExoplanets, -moons, -comets
A Temperate Sub-Neptune Transiting The M4 Dwarf TOI-210 Identified By NIRPS And TESS — Uncovering Hidden M-dwarf Planetary Systems In The Near-infrared
[astro-ph.EP] Super-Earths and sub-Neptunes dominate the exoplanet population, yet their compositions, formation mechanisms, and capability of retaining atmospheres remain poorly understood. M-type stars offer a unique opportunity to investigate these […]
Posted inExoplanets, -moons, -comets
Large Planets Ruled Out After 70 Ophiuchi AB Binary System Search
[University of Michigan] New research led by the University of Michigan is helping set the stage for future observatories to characterize rocky planets outside our solar system, planets that could […]
Posted inExoplanets, -moons, -comets
An Earth-like Planet With Two Suns?
[UC Riverside] A nearby star system with two suns could potentially support an Earth-sized planet in a region where liquid water could exist, according to a new paper examining the […]