AI Summary

SETI has traditionally targeted radio emissions, assuming alien societies are currently transmitting signals. Researchers note a “synchronicity” problem: civilizations that existed a billion years ago would not be detectable by present‑day radio searches. With the Milky Way estimated at roughly 13 billion years old, the odds of overlapping with an active, message‑sending civilization are described as a “huge leap of faith.” This framing suggests that alternative approaches, such as examining ancient lunar material, may be needed to uncover evidence of past extraterrestrial activity.

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