CATCH ME UP
NASA research indicates certain Earth microbes could survive in the moon's South Pole shadows.
Studies found specific terrestrial fungi can survive up to seven days near the lunar south pole.
Permanently shadowed, extremely cold regions provide a preservation environment for resilient organisms.
Human explorers naturally carry microbes that may escape habitats and spacesuits to contaminate the surface.
More context
Contamination could hinder efforts to identify the moon's original biological and chemical signatures.
China is concurrently preparing to launch the Chang'e-7 mission to search for water ice.
The Chang'e-7 mission includes a specialized hopper designed to jump into shadowed craters.
Researchers warn that a survival window of seven days is longer than previously anticipated.
Enhanced contamination controls may be necessary for future deep-space exploration and Mars missions.
Microbial persistence complicates the search for pristine lunar history or extraterrestrial life indicators.