Gallery Zhang Shuangnan (C), lead scientist of China’s Hard X-ray Modulation Telescope (HXMT), speaks during a press conference By DM NEWS - February 20, 2021 Beijing: Zhang Shuangnan (C), lead scientist of China’s Hard X-ray Modulation Telescope (HXMT), speaks during a press conference at the Institute of High Energy Physics under the Chinese Academy of Sciences in Beijing, capital of China. –Agencies