The "Yuanwang I" Space Tracking Ship moors at the World Expo Park in Shanghai, east China, Nov. 27, 2011. "Yuanwang I", China's first vessel for tracking and controlling rockets and spacecrafts that was retired in 2010 after 32 years on service, was moved to Shanghai's World Expo Park on Saturday. The vessel will serve as a museum for scientific eduction. [Xinhua/Guo Changyao]