Experiment module

The experiment modules (Chinese: 实验舱) are components of the Tiangong space station. The experiment modules complete the third and final stage of Project 921, the China National Space Administration's program to establish a permanent Chinese space station. While China's small uncrewed spacecraft can provide platforms for zero gravity and exposure to space for scientific research, the experiment modules offer a long term environment combined with ready access by human researchers over periods that far exceed the capabilities of Shenzhou spacecraft. Operations are controlled from the Beijing Aerospace Command and Control Center in China.

The first experiment module, Wentian, was launched into orbit on 24 July 2022. The second module, Mengtian, was launched into orbit on 31 October 2022.