Overview
- A NASA-led modeling study published this week found that small, shadowed micro-niches near the Moon’s south pole could keep some Earth microbes viable but dormant for up to about seven days.
- Researchers combined high-resolution terrain maps, temperature data and UV/radiation raytracing to test five organisms commonly associated with humans and spacecraft.
- Survival in the models depended on local topography that cuts direct UV exposure, with protective spots ranging from crater rims to tiny depressions such as footprints.
- The study found no conditions that would allow growth or reproduction, and the team plans higher-resolution illumination models and laboratory follow-up experiments to refine which spots pose real risk.
- Authors say the result increases the scientific sensitivity of polar sampling and raises calls to reassess planetary-protection rules for upcoming crewed Artemis missions because humans cannot be sterilized like uncrewed hardware.