File photo taken on Aug. 10, 2017, shows staff members communicating in the control room of the Five-hundred-meter Aperture Spherical Radio Telescope (FAST) in Pingtang County, southwest China's Guizhou Province. China's FAST, the world's largest single-dish radio telescope, has discovered 11 new pulsars so far, the National Astronomical Observatories of China (NAOC) said Tuesday. (Xinhua/Ou Dongqu)
