Solar System Technosignatures Cannot Be Ruled Out: Four Classes, Detection Challenges, and Prospects with Upcoming Surveys

To the point

Astronomer T. Joseph Lazio says we cannot yet rule out extraterrestrial technosignatures in the Solar System because vast areas are poorly surveyed and artificial objects could hide as probes, surface installations, or inert rocks, with future surveys and AI tools likely to help identify unusual cases even without definitive proof.

Imminent: Inside the Pentagon’s Hunt for UFOs
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 he Billy Meier Contacts Reports: Book 1
he Billy Meier Contacts Reports: Book 1
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 Gskyer Refracting Telescope
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 After the Flying Saucers Came: A Global History of the UFO Phenomenon
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Could aliens already be in our Solar System? Scientists say we cant rule it out
indiatimes.com

Could aliens already be in our Solar System? Scientists say we cant rule it out

Humanity has already sent five spacecraft on trajectories that will eventually carry them beyond the Solar System, demonstrating that technologically advanced civilisations can launch interstellar probes. That raises an intriguing possibility.