Tiangong-1 is China's first space laboratory module, an experimental testbed to demonstrate the rendezvous and docking capabilities needed to support a space station complex. Launched unmanned aboard a Long March 2F/G rocket on 29 September 2011, it is part of the Tiangong program, which aims to place a larger, modular station into orbit by 2020. Tiangong-1 will be deorbited in 2013, and replaced over the following decade by the larger Tiangong-2 and Tiangong-3 modules.
Tiangong-1 will be visited by a series of Shenzhou spacecraft during its two-year operational lifetime. The first of these, the unmanned Shenzhou 8, successfully docked with the module in November 2011; the manned Shenzhou 9 mission is expected to launch to Tiangong-1 in June 2012.