[NASA]. The abstract in PubMed or at the publisher’s site is linked when available and will open in a new window.
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Posted inIce Giant
SwRI Staff Contribute To New Ideas About Origins Of Uranus And Neptune
[SwRI] Uranus and Neptune are often considered planetary twins due to their many similar characteristics, including size, mass and atmospheric conditions, and have long been thought to have pulled from […]
Posted inWater/Hycean Worlds & Oceanography
A Voyage Into The Slow-motion World Of Earth’s Deep Seas
[Helmholtz Centre for Ocean Research Kiel (GEOMAR)] Polymetallic nodules form at a snail’s pace. They grow about one to two millimetres over the course of a million years. If buried […]
Posted inRobotics/Rovers/UAVs
Rosalind Franklin Rover Stand-In Tackles A Tilted Descent
[ESA]. A full-size model of the rover tackled slopes, boulders and Mars-like gravity as it stepped onto a simulated martian terrain during a two-month test campaign on Earth.
![a) Large area EDS map of Nantan meteorite sample showing the distribution of detected elements. b) XPS SnapMaps of Nantan fragment showing the distribution of Fe and Ni. c) XRF maps of individual elements detected, with a focus on Fe and Ni. Three regions of interest are circled which were analyzed further, high Ni (green), low Ni (red), and the large inclusion (orange). -- [physics.geo-ph]](https://i0.wp.com/astrobiology.com/wp-content/uploads/2026/10/Correlative.png?resize=1200%2C713&ssl=1)
Posted inMeteorites & Asteroids
Correlative Microstructural Analysis of a Weathered Nantan Meteorite Fragment
[physics.geo-ph]. The weathering of iron-rich phases within meteorites is a multi-stage process that significantly alters the microstructure and chemical composition based both on the environmental condition at the location of […]
![Overview of the ML-DH framework. Top: Training stage, using DFT energies, forces, and dipoles to train the NNFF and EPNN. Bottom: Prediction stage, yielding IR spectra via NNFF optimization, normal mode analysis, and EPNN dipole derivatives.-- [astro-ph.GA]](https://i0.wp.com/astrobiology.com/wp-content/uploads/2026/10/A-machine.png?resize=1200%2C719&ssl=1)
Posted inAstrochemistry
A Machine-learning-driven Dataset Of 144,111 Polycyclic Aromatic Hydrocarbon Infrared Spectra For Interpreting Aromatic Infrared Bands
[astro-ph.GA] The interpretation of interstellar aromatic infrared bands (AIBs) relies on reference spectral libraries, but the chemical space covered by existing databases remains incomplete relative to the vast structural diversity […]
![CPD continuum flux densities at 345 GHz for different planet masses and separations. The dots mark the solar system gas giants, the directly imaged planets in PDS 70 and WISPIT 2, and candidate protoplanets in disc gaps. For comparison, the distribution of fully formed gas giants is shown (top panel). The white curves display sensitivity limits. -- [astro-ph.IM]](https://i0.wp.com/astrobiology.com/wp-content/uploads/2026/10/Planet-formation.png?resize=1200%2C717&ssl=1)
Posted inAstronomy & Telescopes
Planet Formation On Solar System Scales
[astro-ph.IM] Giant planets are often regarded as primordial protoplanetary “architects”. Their formation and interactions with planetesimals and other planets during and after the protoplanetary disc phase are key to setting […]
![Current ALMA can detect the rich chemistry within the snowline around higher-mass stars, with an example spectrum shown in the top panel. For Sun-like stars, mapping across the CO snowline only ( > ∼ 10 au) is currently possible, which corresponds to the giant planet formation zone. The step changes in spatial resolution and sensitivity provided by ALMA2040 will allow us to detect and map the composition of terrestrial-planet-building material around Sun-like stars. Data from Qi et al. (2013), Andrews et al. (2016), and Booth et al. (2024a). -- [astro-ph.IM]](https://i0.wp.com/astrobiology.com/wp-content/uploads/2026/10/Chemistry-on.png?resize=1200%2C716&ssl=1)
Posted inAstrochemistry
Chemistry On Solar System Scales
[astro-ph.IM]. The initial chemical composition of planets, primitive bodies in our solar system, and exoplanets is ultimately set by their nascent protoplanetary disks.
![(Left) The N2H +/HCN ratio toward the central region of M83 shown in the color scale. The black contours show 3-mm continuum intensities with 0.5 mJy beam−1 increments. The beam size is shown at the bottom left corner. (Right) The same figure as Figure 2(a), but including data points from the galactic center region. The grey dashed lines have slopes of 1, and show the lines of constant N2H +/HCN ratios. -- [astro-ph.GA]](https://i0.wp.com/astrobiology.com/wp-content/uploads/2026/10/ALMA-observations.png?resize=1200%2C722&ssl=1)
Posted inAstrochemistry
ALMA Observations Towards M83 Reveal N2H+ Tracing Dense Gas
[astro-ph.GA] Galactic observations have shown that N2H+ intensities preferentially trace star-forming dense molecular gas compared with HCN or HCO+, which are conventionally used as dense-gas tracers in extragalactic studies.
![ZTF image sequences of 3I before and after perihelion. Panel (a) shows the pre-perihelion images, and panel (b) shows the post-perihelion images. The observation time is marked in each panel. The white scale bars indicate angular distances of 30′′ in panel (a) and 60′′ in panel (b). All images are oriented with north up and east to the left. The cyan arrows labeled ⊙, −⊙, and −v indicate the projected solar, anti-solar, and anti-velocity directions, respectively, and the cyan cross marks the photometric center. -- [astro-ph.EP]](https://i0.wp.com/astrobiology.com/wp-content/uploads/2026/10/Dust-Activity.png?resize=1200%2C719&ssl=1)
Posted inComets and Asteroids
Dust Activity Evolution and Constraints on Icy Grains in the Interstellar Comet 3I/ATLAS
[astro-ph.EP] We present Zwicky Transient Facility observations of the interstellar comet 3I/ATLAS to characterize its dust-activity evolution before and after perihelion.