Video PlayerClose
Visitors watch the FAST model at the astronomical museum in Pingtang during summer vacation in southwest China's Guizhou Province, July 24, 2019. (Xinhua/Yang Wenbin)
Visitors watch the FAST model at the astronomical museum in Pingtang during summer vacation in southwest China's Guizhou Province, July 24, 2019. (Xinhua/Yang Wenbin)