Astronomy is a discipline that studies the celestial bodies in space, the structure and development of the universe. The contents include the structure, properties and operation rules of celestial bodies<br>Law, etc. By observing the radiation emitted from celestial bodies to the earth, we can find and measure their positions, explore their motion laws, and study their physical properties, chemical composition, internal structure, energy source and evolution law. Astronomy is an ancient science. Since the history of human civilization, astronomy has played an important role<br>
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