The Moon may hold more than traces of its geological history. According to a new theoretical study, microscopic fragments of ancient technology from distant star systems could have accumulated on its surface over billions of years.
Researchers suggest that lunar dust may preserve artificial materials left behind by civilizations that existed long before humanity began exploring space.
The proposal does not claim that extraterrestrial technology has already been discovered. Instead, it introduces a different approach to the search for extraterrestrial intelligence (SETI): examining lunar soil for microscopic technological signatures, also known as technosignatures.
The idea is based on the Moon's unusual environment, which allows material from space to settle and remain relatively undisturbed. If fragments of artificial objects can travel between star systems, some may eventually reach the lunar surface and become part of its ancient dust.
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