摘要
At 09:47 Beijing time on June 21,the Tianzhou 1 cargo spacecraft departed the Tiangong 2 space lab and began independent flight after a two-month period in-orbit flight with the two spacecraft combined.The Tianzhou 1 separated from Tiangong 2 at 09:16 when it
At 09：47 Beijing time on June 21, the Tianzhou I cargo spacecraft departed the Tiangong 2 space lab and began independent flight after a two-month pe- riod in-orbit flight with the two spacecraft combined.
