BEIJING (CASC PR) — At 8:55 p.m. on May 29th, at China’s Wenchang Space Launch Site, the Tianzhou-2 cargo spacecraft carrying about 6.8 metric tons of materials was launched to the Tianhe space station by the Long March-7 carrier rocket. Tianzhou-2 is carrying the daily necessities needed by astronauts , materials for conducting space science experiments, and the propellant used to refuel the space station.