Astronomy is the study of the structure and development of celestial bodies in space and the universe. It covers the structure, properties and laws of operation of celestial bodies.

Astronomy is an ancient science that has had an important place since the beginning of human civilization.

It is mainly used to discover and measure the positions of celestial bodies, explore their laws of motion, and study their physical properties, chemical composition, internal structure, energy sources, and their evolutionary laws by observing the radiation emitted to Earth.

The study of astronomy has great practical importance to our lives and has a great impact on the human view of nature. Ancient astronomers determined the time, direction and calendar by observing the Sun, Moon and some other celestial bodies and celestial signs. This was also the beginning of astrometry. If we count from human observation of celestial bodies and recording of celestial signs, the history of astronomy has been at least 5,000 to 6,000 years. Astronomy occupies a very important place in the early history of human civilization. The pyramids in Egypt and Stonehenge in Europe are very famous prehistoric astronomical sites. Copernicus' heliocentric theory had liberated natural science from theology; Kant and Laplace's nebulae on the origin of the solar system opened the first gap in the metaphysical view of nature in the eighteenth century.

The emergence of Newtonian mechanics, the discovery of nuclear energy, and other events that played an important role in human civilization are closely related to astronomical research. Current research on high-energy astrophysics, dense stars, and the evolution of the universe can greatly advance modern science. The study of the Sun and solar system objects, including the Earth and artificial satellites, has many applications in spaceflight, geodesy, communications and navigation. Astronomy has its origins in the ancient human activity of obtaining seasons and divination.