Students watch the screen showing the female astronaut Wang Yaping, one of the three crew members of Shenzhou-10 spacecraft, making a red water ball in space, at the High School Affiliated to Renmin University of China, in Beijing, capital of China, June 20, 2013. A special lecture began Thursday morning, given by Wang Yaping aboard China's space module Tiangong-1 to students on Earth. (Xinhua/Wang Yongzhuo)