Staff carry out regular maintenance operation to FAST in Guizhou (8)

Photo taken with a fisheye lens on March 28, 2021 shows staff members conducting maintenance work on the feed cabin of the Five-hundred-meter Aperture Spherical Radio Telescope (FAST) in Pingtang County, southwest China's Guizhou Province. Starting formal operations in Jan. 11, 2020, the FAST is believed to be the largest and most sensitive radio telescope in the world, which has a huge potential for verifying and exploring mysteries of the universe. (Xinhua/Ou Dongqu)