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Topic: Extraterrestrial Intelligence

The Five-hundred-meter Aperture Spherical Telescope (FAST) is nestled within a natural basin in China's remote and mountainous southwestern Guizhou province. (Getty Images/Jeff Dai/Stocktrek Images)

China's mysterious alien radio signal

Extraterrestrial by Avi Loeb (Photo illustration by Salon/Olivia Falcigno/Houghton Mifflin Harcourt)

The first alien spacecraft?

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