A Long March 2D carrier rocket carrying Chuangxin 1-03 and Shiyan Satellite 4 blasts off from the launch pad at the Jiuquan Satellite Launch Center in northwest China's Gansu Province, Nov. 20, 2011. The launch was the 151th of China's Long March series of rockets. The Chuangxin 1-03 will be used to collect and relay hydrological, meteorological, and electric power data as well as data for disaster relief. The Shiyan Satellite 4 will be used for space technology experiments and environmental observation.