The first step is to launch unmanned and manned spacecraft, send astronauts safely into low-earth orbit, conduct earth observation and scientific experiments, and return astronauts safely to the ground. With the safe return of China's first astronaut Yang Liwei in June 65438+1October 65438+June 2003, the historic breakthrough of China's manned spaceflight project, that is, the first step of the mission, has been completed.
The second step is to continue to break through the basic technology of manned space flight: multi-person and multi-day flight, astronauts walking out of the cabin and completing the rendezvous and docking of the spacecraft and the space capsule. On the basis of breaking through these technologies, a short-term manned space laboratory will be launched to build a complete space engineering system. The launch of Shenzhou VI marks the second step of China's manned spaceflight project. 20 19 July19 China's self-developed "Tiangong-2" space laboratory successfully completed its mission and returned to the designated position on the earth. The second task has been completed.
The third step is to establish a permanent space laboratory and space engineering system in China. Astronauts and scientists can travel between the earth and the space station and conduct large-scale space science experiments. After the completion of China's "three-step" manned space flight plan, the experimental activities of astronauts and scientists in space will be regularized, laying a solid foundation for China's peaceful use of space and development of space resources.