A series of terms, such as landing on the moon, Mars exploration and the International Space Station, appear in front of us, seemingly unrelated, but in fact they all point to the same goal, that is, space flight, which is another peak of the development of human civilization. In fact, there are many fairy tales in ancient China and the West. Although there are cultural differences, there is one thing in common, that is, the characters in fairy tales have the ability to fly. With the development of modern science and technology, flying into the blue sky is no longer a dream, and flying into space is not a problem. April 196 12, Soviet Union,

It can be said that the development of the aerospace field began after World War II, and the V-series missiles made in Germany in the late World War II laid the foundation for the development of aerospace. You know, if you want to fly into space, the first problem to be solved is the gravity of the earth, which requires great propulsion to overcome gravity and fly into the sky. The development of missiles at that time made it possible. As we all know, the missile is so small, but the engine can make it fly at high speed, which shows that the thrust generated by the engine at that time was enough.

At present, there are many countries with space exploration capabilities, and China, as a new space power, is among them. Since 1990s, China has started the development of manned spaceflight project and formulated a "three-step" strategy for space development. One is to launch a manned spacecraft, which has the ability to go back and forth in the open space. The second is to master the corresponding space activity technology, such as spacewalk and space rendezvous and docking, and establish a short-term manned space laboratory. It can be said that the first two steps are to pave the way for the last step, that is, to build a long-term manned space station. It can be said that with the rapid development of science and technology and economy in China, China has moved towards the third step of manned space flight development and is striving for it.

Today, China's technological development in the space field has been at the forefront of the world. You know, only the United States and Russia mastered the development of space technology in the past. These two countries were the first to master orbital space technology, and China became the third country to master this technology. According to the space "three-step" strategy, China will build a space station around 2020. At present, the only space station in orbit is the international space station jointly built by many countries led by the United States and Russia. With the extension of service life, the International Space Station will be retired soon, which means that the space station built by China will be the only on-orbit space station in the world, which shows how great achievements China has made.