[astro-ph.IM] Sample return from South Pole-Aitken Basin (SPA) on the Moon has been recognized as the highest priority lunar science mission for well over two decades, appearing as a recommended […]
planetary protection
Posted inComets and Asteroids
Mystery Surrounding The Formation Of Asteroid Bennu Solved
[ETH Zurich] The asteroid Bennu orbits the Sun once every 1.2 years and approaches Earth every six years, passing within around 300,000 kilometres. NASA took advantage of this to collect […]
Posted inPlanetary Protection & Biosafety
A Framework for Evaluating Forward Contamination Risk for Bio-ISRU Microorganisms
[astro-ph.IM]. NASA planetary protection policy seeks to avoid inadvertent forward contamination of celestial bodies and backward contamination of Earth during space exploration.
Posted inArctic / Antarctic / Alpine
Atmospheric Microbial Transport to Antarctica and Its Ecological Implications: A Systematic Review
[Environmental Microbiology] Atmospheric transport is hypothesized to be the primary vector connecting isolated Antarctic terrestrial habitats to global microbial pools, yet the mechanisms governing this connectivity still have important gaps.
![Low-angle backscatter electron (LABE) imaging (Supplement 9) of sample OREX-220001-1 consisting of particles obtained from inside the SRC but exterior to the sample canister — including fragments of Bennu, SRC char, and metal. FG, fine-grained. -- [astro-ph.EP]](https://i0.wp.com/astrobiology.com/wp-content/uploads/2026/09/OSIRIS-REx.png?resize=1200%2C800&ssl=1)
Posted inSample Return
OSIRIS-REx Returned a Pristine Sample of Asteroid Bennu: Takeaways from the Mission’s Contamination Control and Knowledge Program
[astro-ph.EP] NASA’s OSIRIS-REx mission had the objective of delivering a pristine sample from asteroid (101955) Bennu to Earth for scientific analysis–where “pristine” signifies the absence of foreign materials that could […]
Posted inBiosignatures & Paleobiology
The Epistemic Risk of the 31st Spore: If Planets Aren’t Fine Tuned, We’re Doing Life Detection Wrong
[physics.pop-ph] Exploration of planetary bodies within our solar system will be essential for understanding the origin of life on Earth and the distribution of life in the universe.
Posted inSample Return
Closed-loop In Situ Isolation Of Deep-sea Extremophiles Through Sensor-driven Microenvironment Preservation
[Nature Sensors] Deep sea microorganisms remain largely inaccessible because existing sampling and cultivation methods fail to preserve native high-pressure microenvironments from seafloor to laboratory.
Posted inPlanetary Protection & Biosafety
Functional Profiling Of Spacecraft Cleanroom Microbiomes Through Genome‑wide Phenotype Predictions
[biorxiv.org] Current planetary protection approaches rely heavily on spore-based tests developed for Mars missions and may not adequately assess contamination risks for icy ocean worlds such as Europa.
Posted inMoon
Potential Survivable Niches For Microbial Life On The Lunar South Pole
[astro-ph.EP]. Most lunar surface conditions are incredibly harsh for microbial survival. High ultraviolet radiation, temperatures, and energetic particle radiation limit survival over most unprotected lunar surfaces, particularly in equatorial regions […]
Posted inPlanetary Protection & Biosafety
Predicting Fungal Contaminants for Space Missions Using Proteome-Wide Screening for Protein Orthologs
[biorxiv.org]. Fungal contamination poses a growing threat to spacecraft integrity, crew health, and planetary protection efforts.