![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)
[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.
Keith Cowing
Explorers Club Fellow, ex-NASA Space Station Payload manager/space biologist, Away Teams, Journalist, Lapsed climber, Synaesthete, Na’Vi-Jedi-Freman-Buddhist-mix, ASL, Devon Island and Everest Base Camp veteran, (he/him) 🖖🏻
Posted inPlanetary Protection & Biosafety
NASA Planetary Protection Handbook
[NASA] This handbook provides guidance to mission providers and Planetary Protection (PP) practitioners on implementing PP measures for both robotic and crewed space missions. This handbook represents major updates to […]
Posted inAway Teams & Field Reports
NASA Scientists Search For Clues About Mars’ Past In Scotland
[NASA] This summer, NASA scientists headed to the Scottish Highlands to follow up on last year’s announcement of potential biosignatures on Mars and prepare for future research.
![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 […]
![Visual abstract -- [Journal of the American Chemical Society]](https://i0.wp.com/astrobiology.com/wp-content/uploads/2026/10/Nonequilibrium.jpg?resize=1200%2C716&ssl=1)
Posted inAstrochemistry
Nonequilibrium Formation of Pyridine (C5H5N) in Interstellar Ice Analogs: Implications for Biorelevant Nitrogen Heterocycles in Ryugu and Bennu
[Journal of the American Chemical Society] Biorelevant nitrogen heterocycles, including the five canonical nucleobases found in RNA and DNA, have recently been identified in samples returned from the carbonaceous asteroids […]
Posted inAstrochemistry
The Abundance And Emission Of PAHs From The Local To Early Universe
[astro-ph.GA] We present the first large-volume cosmological simulation of galaxy evolution with a model for the abundance and luminous emission of Polycyclic Aromatic Hydrocarbons (PAHs) across a wide range of […]
Posted inAstrogeology
Our Solar System Chose Fire Over Ice To Build Its First Bodies
[Yale University] When the solar system first took up the task of building solid bodies — such as planets, moons, and protoplanets — it basically had a choice between two […]
Posted inCryobiology
Characterization Of Cold-adapted, Halotolerant Glycoside Hydrolase From Antarctic Halomonas sp. KS41843
[Applied Microbiology and Biotechnology ] Cold-adapted and halotolerant enzymes are promising candidates for industrial biocatalysis because they remain active under low-temperature and high-salinity conditions.
Posted inMicrobiology & Virology
Near-infrared Confocal Imaging Reveals The Spatial Organisation Of Far-red Photosynthesis In Shark Bay Microbial Mats And Halomicronema sp,
[Journal of Microscopy] Far-red light (FRL) cyanobacteria occupy spectrally filtered habitats where visible wavelengths are depleted but far-red radiation persists.
Posted inAstrochemistry
Modeling The Radiolysis In H2O:HCOOH ice: Connecting Laboratory Experiments With Astronomical Measurements
[RSC Advances] We present a computational study of radiolytic chemistry and desorption dynamics in astrophysical ice composed of H2O:HCOOH (1 : 1), irradiated with Ni11+ ions at 46 MeV and […]