![Guiyang. 31st Mar, 2021. China's Five-hundred-meter Aperture Spherical Radio Telescope (FAST), the world's largest filled-aperture and most sensitive radio telescope, has officially opened to the world starting Wednesday. Credit: Ou Dongqu, Wang Guiyang. 31st Mar, 2021. China's Five-hundred-meter Aperture Spherical Radio Telescope (FAST), the world's largest filled-aperture and most sensitive radio telescope, has officially opened to the world starting Wednesday. Credit: Ou Dongqu, Wang](https://c8.alamy.com/comp/2F6CAC0/guiyang-31st-mar-2021-chinas-five-hundred-meter-aperture-spherical-radio-telescope-fast-the-worlds-largest-filled-aperture-and-most-sensitive-radio-telescope-has-officially-opened-to-the-world-starting-wednesday-credit-ou-dongqu-wang-jingyunxinhuaalamy-live-news-2F6CAC0.jpg)
Guiyang. 31st Mar, 2021. China's Five-hundred-meter Aperture Spherical Radio Telescope (FAST), the world's largest filled-aperture and most sensitive radio telescope, has officially opened to the world starting Wednesday. Credit: Ou Dongqu, Wang
![China's FAST telescope opened up to scientists from 14 countries last year | South China Morning Post China's FAST telescope opened up to scientists from 14 countries last year | South China Morning Post](https://cdn.i-scmp.com/sites/default/files/d8/images/canvas/2022/01/06/a967edb9-03a0-4432-b2fa-c5f7cdbb7906_3dd44293.jpg)
China's FAST telescope opened up to scientists from 14 countries last year | South China Morning Post
![World's biggest radio telescope starts operating in China in search for alien life - ABC News (Australian Broadcasting Corporation) World's biggest radio telescope starts operating in China in search for alien life - ABC News (Australian Broadcasting Corporation)](https://www.abc.net.au/news/image/7566050-3x2-700x467.jpg)