PINGTANG, June 30, 2016 (Xinhua) -- Photo taken on June 29, 2016 shows a part of the Five-hundred-meter Aperture Spherical Telescope, or "FAST," in Pingtang County, southwest China's Guizhou Province. FAST, the world's largest ever radio telescope, has a dish-like reflector, which is 500 meters in diameter and made up of 4,450 panels. Now technicians have assembled 4,443 panels, accounting for 99.8 percent of all. The assembling work of the reflector will be completed on July 3. The telescope will be used to detect and collect signals and data from the universe. (Xinhua/Liu Xu)