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In this image made off the monitor screen at the Beijing Aerospace Flight Control Center and released by China's Xinhua News Agency, Chinese astronauts, from left, Liu Wang, Liu Yang and Jing Haipeng wave in the orbiting Tiangong-1 lab module Monday afternoon, June 18, 2012. They moved from Shenzhou-9 spacecraft to this module three hours after docking Monday. (AP Photo/Beijing Aerospace Control Center via Xinhua) NO SALES

Chinese astronauts return to Earth

China's first female astronaut

and two other crew members emerged smiling from a capsule that returned

safely to Earth on June 29 from a 13-day mission to an orbiting module

that is a prototype for a future space station.