Panoramic photo taken on March 29, 2021 shows China's Five-hundred-meter Aperture Spherical Radio Telescope (FAST) under maintenance in southwest China's Guizhou Province. China's FAST officially opened to the world starting Wednesday. (Xinhua/Ou Dongqu)
Aerial photo taken on March 31, 2021 shows China's Five-hundred-meter Aperture Spherical Radio Telescope (FAST) under maintenance in southwest China's Guizhou Province. China's FAST officially opened to the world starting Wednesday. (Xinhua/Ou Dongqu)
Staff members work at the control room of China's Five-hundred-meter Aperture Spherical Radio Telescope (FAST) in southwest China's Guizhou Province, March 27, 2021. China's FAST officially opened to the world starting Wednesday. (Xinhua/Ou Dongqu)
Guizhou Province, March 29, 2021. China's FAST officially opened to the world starting Wednesday. (Xinhua/Ou Dongqu)