Do you know the significance of stargazing?

The ancients thought that man should be on the ground and the ground should be on the sky, so we can predict the development of things on the ground through the movement of stars in the sky. China was dominated by agriculture in ancient times, so the weather was a very important factor for the production of the whole country. Therefore, the ancients hoped to grasp the law of weather operation through the changes of stars, so they developed star watching. But stargazing needs someone with a certain knowledge base to master it, and then it will be integrated into China's mathematical system.

The main significance of stargazing is that it has made great progress in ancient astronomy in China. The ancients also summed up some experiences by observing the astrology, which prompted China to produce scientists such as Zhang Heng, Guo Shoujing, monk and his party.

The significance of stargazing in history lies in making calendars and divination. From 15 to 17 century, astronomy became the beginning of physics challenging theocracy. Heliocentrism replaced the geocentric theory, scientists paid the price of blood, but brought the flame of civilization to mankind. The discovery of Kepler's three laws paved the way for Newton's law of universal gravitation.

Now and in the future, observing the universe is to understand the past and future of the universe (the generation and future evolution direction of the universe) and look for small celestial bodies that may hit the earth.