HELSINKI — A Chinese satellite manufacturer and constellation operator says it has successfully demonstrated space-to-ground high-speed laser communications which could help China break bottlenecks in getting data from space down to the ground. Changguang Satellite Technology (CGST) recently carried out the test with its Jilin-1 MF02A04 remote sensing satellite. The test was conducted in cooperation with the Aerospace Information Research Institute (AIR) of the Chinese Academy of Sciences (CAS). Changguang Satellite Technology itself an offshoot from the state-owned Changchun Institute of Optics, Fine Mechanics and Physics (CIOMP) under the Chinese Academy of Sciences (CAS). Established in 2014, CGST now has...