Known as China's first space lab, Tiangong-2 reentered the Earth's atmosphere on Friday, accomplishing its mission as a key step in China's manned space program. Tiangong-2 has been in service for over 1,000 days. What has it achieved so far?
Copyright © 2018 CGTN. Beijing ICP prepared NO.16065310-3
Copyright © 2018 CGTN. Beijing ICP prepared NO.16065310-3