Photo taken on Sept. 24, 2016 shows the 500-meter Aperture Spherical Telescope (FAST) in Pingtang County, southwest China's Guizhou Province. The FAST, world's largest radio telescope, measuring 500 meters in diameter, was completed and put into use. Drones have been in common use in photojournalism in 2016. (Xinhua/Liu Xu)
