[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).
Imaging & Spectroscopy
Posted inWater/Hycean Worlds & Oceanography
Icy Ocean Planet Recon: Saildrone Research Fleet To Circle Antarctica For 5 Years
Editor’s note: As we plan to use robotic probes such as Saildrone to explore worlds in our solar system with oceans, missions that explore Earth’s oceans can serve as important […]
Posted inMars
Microbial Methanogenesis on Mars: A Life Detection Target For An MLE-Type Mission And Future Human Exploration
[astro-ph.IM] Methane (CH4) is one of the most enigmatic and potentially consequential trace gases detected on Mars, having demonstrated apparent seasonality, localized plumes, or, depending on who you ask, never […]
Posted inExoplanets, -moons, -comets
Identifying Deformed Exoplanets With JWST And Ariel: A Target Selection Metric For Phase Curve Observations
[astro-ph.EP] The shape of an exoplanet encodes fundamental information about its internal structure. For close-in giant planets, strong stellar tidal forces induce measurable deformations that can be probed through high-precision […]
Posted inAstrochemistry
Robustness Of C/O And Mean Molecular Weight Under Disequilibrium Chemistry
[astro-ph.EP] Transmission spectroscopy increasingly reduces exoplanet spectra to derived compositional metrics, such as C/O, O/H, and mean molecular weight (MMW), but these quantities do not carry molecular abundance uncertainties in […]
Posted inExoplanets, -moons, -comets
A New Method For Constraining 3D Exoplanet Atmospheres: Application To WASP-94A b’s Panchromatic Spectrum
[astro-ph.EP] A growing number of transiting exoplanets exhibit spectroscopic evidence that their leading and trailing limbs differ. Interpreting these observations is now the limiting step.
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 […]