30 December 2019
The SIASAIL-I solar sail deorbit test project, developed by the Shenyang Institute of Automation under the Chinese Academy of Sciences has successfully verified key technologies in orbit. According to the data and pictures returned from the satellite, the key technology test of the "SIASAIL-I" solar sail is progressing smoothly, which marks the success of the solar sail verification mission. SIASAIL-I was launched - attached to SpaceTY Xiaoxiang 1-07 satellite - by a Kuaizhou-1A carrier rocket from the Jiuquan Satellite Launch Centre on 30 August (BJT: 31 August) 2019.
UPDATE: Solar sail in Earth orbit is big breakthrough for China