Overview
- The NASA-led paper, published Aug. 19, 2026, modeled illumination, temperature and radiation and concluded that certain Earth-associated microbes can remain viable for days in shaded or low-illumination niches near the lunar south pole.
- Researchers used Lunar Reconnaissance Orbiter topography and radiation models to map survivable niches at candidate sites — including Nobile Rim, Connecting Ridge and De Gerlache Rim — with pocket sizes ranging from meters to miles.
- The study tested five microbes commonly found on spacecraft and people and identified the fungus Aspergillus niger as the most resilient, able to persist up to seven Earth days in some shadowed microenvironments.
- Authors stress that survival in the models means dormancy rather than growth because the Moon lacks an atmosphere and stable liquid water needed for replication, but they warn that human-borne microbes could still contaminate surface science and pose crew-health concerns.
- The findings build on past surprises about microbes on the ISS exterior and note meteorite transfer as a possible prior vector; they recommend baseline contamination surveys, revised contamination-control plans for Artemis-era missions, and careful sample-handling to avoid confusing Earth microbes with native lunar chemistry.