Photo taken on June 19, 2015 shows the Large Sky Area Multi-Object Fibre Spectroscopy Telescope (LAMOST) at the Xinglong observation station of the National Astronomical Observatories under the Chinese Academy of Sciences in Xinglong, north China's Hebei Province. The observation station is equipped with a LAMOST set, also known as the Guo Shoujing Telescope, named after the 13th century Chinese astronomer. (Xinhua/Wang Xiao)

Photo taken on June 19, 2015 shows the Xinglong observation station of the National Astronomical Observatories under the Chinese Academy of Sciences in Xinglong, north China's Hebei Province. The observation station is equipped with a Large Sky Area Multi-Object Fibre Spectroscopy Telescope (LAMOST), also known as the Guo Shoujing Telescope, named after the 13th century Chinese astronomer. (Xinhua/Wang Xiao)

Photo taken on June 19, 2015 shows the Xinglong observation station of the National Astronomical Observatories under the Chinese Academy of Sciences in Xinglong, north China's Hebei Province. The observation station is equipped with a Large Sky Area Multi-Object Fibre Spectroscopy Telescope (LAMOST), also known as the Guo Shoujing Telescope, named after the 13th century Chinese astronomer. (Xinhua/Wang Xiao)

Photo taken on June 19, 2015 shows the Xinglong observation station of the National Astronomical Observatories under the Chinese Academy of Sciences in Xinglong, north China's Hebei Province. The observation station is equipped with a Large Sky Area Multi-Object Fibre Spectroscopy Telescope (LAMOST), also known as the Guo Shoujing Telescope, named after the 13th century Chinese astronomer. (Xinhua/Wang Xiao)

Photo taken on June 19, 2015 shows the Xinglong observation station of the National Astronomical Observatories under the Chinese Academy of Sciences in Xinglong, north China's Hebei Province. The observation station is equipped with a Large Sky Area Multi-Object Fibre Spectroscopy Telescope (LAMOST), also known as the Guo Shoujing Telescope, named after the 13th century Chinese astronomer. (Xinhua/Wang Xiao)

Photo taken on June 19, 2015 shows the Xinglong observation station of the National Astronomical Observatories under the Chinese Academy of Sciences in Xinglong, north China's Hebei Province. The observation station is equipped with a Large Sky Area Multi-Object Fibre Spectroscopy Telescope (LAMOST), also known as the Guo Shoujing Telescope, named after the 13th century Chinese astronomer. (Xinhua/Wang Xiao)