A researcher operates a telescope at the quantum communication ground station in Delingha, northwest China's Qinghai Province, Dec. 14, 2016. The world's first quantum satellite "Micius" was put into use on Wednesday after four-month on-orbit tests. China launched the satellite on Aug. 16, 2016. It is nicknamed "Micius," after a fifth century B.C. Chinese philosopher and scientist. (Xinhua/Jin Liwang)
