There’s no denying the allure of alien artifacts. Science fiction is awash in the material remnants of extraterrestrial civilizations, which surface in everything from the classic books of Arthur C. Clarke to game franchises like Mass Effect and Outer Wilds.
The discovery of the first interstellar objects in the solar system within the past decade has sparked speculation that they could be alien artifacts or spaceships, though the scientific consensus remains that all three of these visitors have natural explanations.
That said, scientists have been anticipating the possibility of encountering alien artifacts since the dawn of the space age.
“In the history of technosignatures, the possibility that there could be artifacts in
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