Aviation refers to the navigation activities of manned or unmanned aircraft in the earth atmosphere; Spaceflight refers to the navigation activities of manned or unmanned spacecraft outside the earth atmosphere, also known as space flight or space navigation. In order to expand social production, mankind must open up new activity space. From land to ocean, from ocean to atmosphere, and then to space, it is such a process that human beings gradually expand their scope of activities.

Aerospace is the product of human expanding the atmosphere and space. After more than 100 years of rapid development, aerospace has become one of the most active and influential fields of science and technology in the 21st century. The major achievements in this field not only mark the latest development of human civilization, but also represent the advanced level of a country science and technology.