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Topic: radio astronomy

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

Nicole Karlis
FILE-This Aug. 31, 2015, file photo shows the Gemini Telescope, right, and Canada-France-Hawaii Telescope on Hawaii’s Mauna Kea near Hilo, Hawaii. (AP Photo/Caleb Jones, File)

Are we alone?

Andrew Norton - The Conversation