Photo taken on Nov. 14, 2011 shows the simulation picture of the second space docking between China's Shenzhou 8 and Tiangong-1, in the Beijing Aerospace Flight Control Center, in Beijing, capital of China. China's Shenzhou 8 unmanned spacecraft successfully re-docked with the Tiangong-1, a module of the country's planned space lab on Monday. [Xinhua/Wang Jianmin]