![Example weighting functions for selected microwave frequencies (logarithmically spaced between 3 mm - 3 m) corresponding to the model atmospheres for Saturn (top) and Uranus (bottom) from Figure 1. -- [astro-ph.EP]](https://i0.wp.com/astrobiology.com/wp-content/uploads/2026/08/Microwave-Remote-.png?resize=1200%2C715&ssl=1)
[astro-ph.EP] Microwave radiometer instruments are uniquely capable of studying volatile element abundances and heat/mass transport within the deep atmospheres of giant planets.
Imaging & Spectroscopy
Posted inMars
Gullies At The Start Of Martian Spring
HiRISE regularly takes repeat images of gullies to look for changes. This site is one of the most frequent monitoring sites, with more than 70 images to date. It is […]
Posted inExoplanets, -moons, -comets
ADORA: A Differentiable Optical Modeling And Astrometric Retrieval Framework For SHERA
[astro-ph.EP] Motivated by recent observations suggesting rings found in debris disks are wider than those in protoplanetary disks, we consider a picture in which planetesimals formed in radially narrow dust […]
Posted inTricorders & Sensors
New UC Riverside Lab Focuses on Cutting Edge Astrobiology Tools
[UC Riverside] The Planetary Geochemistry and Astrobiology Laboratory is led by Assistant Professor Fabian Klenner, a new faculty member in UCR’s Department of Earth and Planetary Sciences. His research focuses […]
![Upper Panels. Maps of N × ρ for ortho-H2O and para-H2O, the derived OPR, and Trot(H2O) for the 6 µm band measured on February 28. Note that N for each species has been corrected for the derived OPR. Lower Panels. As in the upper panels for the 2.6 µm H2O bands measured on March 1. -- [astro-ph.EP]](https://i0.wp.com/astrobiology.com/wp-content/uploads/2026/08/JWST-Spatial.png?resize=1200%2C727&ssl=1)
Posted inComets and Asteroids
JWST Spatial-Spectral Mapping of Green Comet C/2022 E3 (ZTF)
[astro-ph.EP] We report a survey of molecular emission from cometary volatiles using the James Webb Space Telescope (JWST) toward Oort cloud comet C/2022 E3 (ZTF) carried out on UT 2023 […]
![The timescale required for a 10 M⊕ring of planetesimals around a 1 M⊙ star to radially diffuse 0.1 M⊕ into the inner 0.5 au. The planetesimal density is assumed to be 4 g cm−3 . The black dashed line shows the boundary where the inner edge is just reachable by the radially diffusing disk, below which the escape velocity is less than the critical escape velocity (v0.5au) and planetesimals are not deliverable at this level. -- [astro-ph.EP]](https://i0.wp.com/astrobiology.com/wp-content/uploads/2026/08/Substructure.png?resize=1200%2C715&ssl=1)
Posted inExoplanets, -moons, -comets
Substructure Evolution From Protoplanetary To Debris Disks Driven By Mutually Gravitating Planetesimals And Implications On Kepler Resonances And Free-floating Planets
[astro-ph.EP]. Motivated by recent observations suggesting rings found in debris disks are wider than those in protoplanetary disks, we consider a picture in which planetesimals formed in radially narrow dust […]
Posted inWater/Hycean Worlds & Oceanography
MBARI Ocean World Expedition: Movement In The Deep
Editor’s note: When we start to mount Astrobiology missions to explore ocean worlds we’ll need ways for our robotic submersibles to observe and interact with whatever life forms they may […]
Posted inBiosignatures & Paleobiology
Orbital Biosignature Assays: FLEX Photosynthesis Satellite Fueled
[ESA] Europe’s newest eye on the health of Earth’s vegetation has taken another crucial step towards orbit – the European Space Agency’s FLEX satellite has been fueled at Europe’s Spaceport […]
Posted inMars
Quasi-diurnal Kelvin Wave Observed in the Atmosphere of Mars by the Pressure Sensor on the InSight Lander
[astro-ph.EP]. During the initiation phase of Martian dust storms, a spectral signature of a zonal wavenumber 1 normal mode Kelvin wave (K1) has been observed in several surface pressure records.
Posted inBiosignatures & Paleobiology
The Effects of M Star Age Dependent Ultraviolet Emission on Detecting and Interpreting Exoplanet Biosignatures
[astro-ph.EP] Given their abundance and observational advantages, M stars will arguably be the best candidates for characterizing and searching for biosignatures on terrestrial exoplanets in the near future.