Topic: radio telescope

The Green Bank Telescope is seen in Green Bank, West Virginia on May 28, 2018. Green Bank is part of the US Radio Quiet Zone, where wireless telecommunications signals are banned to prevent transmissions interfering with a number of radio telescopes in the area. (ANDREW CABALLERO-REYNOLDS/AFP via Getty Images)

Macy Huston, Jason Wright
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