Song Huagang, secretary general of Xinjiang Astronomical Society, explains as a young observer looks on at Nanshan observation station of Xinjiang Observatory in Urumqi, capital of northwest China's Xinjiang Uygur Autonomous Region, Aug. 13, 2017. Young amateurs gathered to observe the Perseid meteor shower at the observation station which serves as a national science education base. (Xinhua/Wang Fei)
