Rocket: Chang Zheng 4B; Payload: Hard X-ray Modulation Telescope (HXMT), Zhuhai-1 01, Zhuhai-1 02, ÑuSat 3; Date: 15 June 2017, 0300 UTC; Launch site: Jiuquan Satellite Launch Center, China. The country’s first homegrown X-ray telescope aims to survey the Milky Way to observe celestial sources of X-rays.