On Saturday afternoon Eastern Time, SpaceX's Dragon spacecraft was launched from Cape Canaveral Space Force Base in Florida aboard a Falcon 9 rocket, carrying two astronauts to the International Space Station. According to NASA, these two astronauts will conduct over 200 scientific experiments and technology demonstrations on the space station, including research on blood clotting, the effects of humidity on plant growth in space environments, and changes in astronaut vision. In addition, they also have an important task, which is to retrieve two American astronauts who were stranded on the space station due to the malfunction of the Boeing "StarCraft" spacecraft. According to the plan, the "Dragon" spacecraft will carry four astronauts back to Earth in February next year.