China launches new Long March 7 rocket in preparation for planned space station

China's Long March 7 rocket launched successfully for the first time this weekend, the second in a trio of new boosters the country will use to launch and supply its planned Tiangong-3 space station. The 53-meter-tall Long March 7 carried a number of small satellites into orbit as well as a subscale, dummy version of China's next-generation crew capsule. The rocket is the middle child in the country's new family of launchers, sitting between the heavier Long March 5  and lighter L