Future moon landings could wipe out clues to how life began on Earth
Scientists warn that methane exhaust from lunar spacecraft could contaminate permanently shadowed regions on the moon. This contamination risks destroying ancient chemical clues that could explain the origins of life on Earth.
Why it matters
As lunar exploration increases, balancing scientific discovery with planetary protection is critical to preserving the moon's historical record.
Scientists are preparing for a new era of lunar exploration, but a new study suggests that every landing could leave behind more than footprints. Researchers found that methane released in spacecraft exhaust may spread across the moon surprisingly quickly, potentially contaminating regions that could preserve ancient chemical clues about how life first emerged on Earth.
The findings suggest that even a landing near the moon's South Pole could send methane molecules "hopping" across the lunar surface to the North Pole in less than two lunar days. As more governments, private companies, and NGOs plan missions to the moon, the researchers say it is becoming increasingly important to understand how exploration itself could affect future scientific discoveries.
The study was published in Journal of Geophysical Research: Planets , an AGU journal focused on planetary science.
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