美国“龙”飞船发射升空，执行新一期载人航天任务

Core Points - The SpaceX "Dragon" spacecraft launched on August 1, carrying four astronauts from the US, Japan, and Russia to the International Space Station (ISS) [2] - This mission, designated "Crew-11," marks the 11th crewed flight of the Dragon spacecraft to the ISS [2] - The astronauts will conduct various scientific experiments during their mission, including lunar landing simulations and studies on the effects of microgravity [2] Launch Details - The "Dragon" spacecraft was launched at 11:43 AM EDT from Kennedy Space Center in Florida [2] - The spacecraft separated from the Falcon 9 rocket and continued its journey to the ISS, with a planned docking time of 3:00 AM EDT on August 2 [2] Astronauts Involved - The crew includes US astronauts Zena Cardman and Mike Fincke, Japanese astronaut Koichi Wakata, and Russian astronaut Oleg Platonov [2] Scientific Research Focus - The astronauts will explore plant cell division, the impact of microgravity on bacteriophages, and methods to increase human stem cell production [2] - Additional experiments will focus on generating nutrients on demand and testing vision protection strategies [2]