Combined photo shows picture of night view of the Five-hundred-meter Aperture Spherical Telescope (FAST) at a karst valley in Pingtang County of southwest China's Guizhou province taken on Sept 1, 2014 (up) (Photo provided by the National Astronomical Observatories of Chinese Academy of Sciences) and picture of the nearly-done project of FAST taken on June 27, 2016. [Photo/Xinhua]