A Long March-4C carrier rocket carring three satellites for scientific experiments blasts off from the launch pad in the Taiyuan Satellite Launch Center in Taiyuan, capital of North China's Shanxi province, July 20, 2013. China successfully launched three satellites for scientific experiments, namely the Chuangxin-3, Shiyan-7 and Shijian-15, into space at 7:37 am Saturday. The three satellites will be used mainly for conducting scientific experiments on space maintenance technologies.[Photo/Xinhua]