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What is the ancient world view?
As early as the Emperor Yao's era in the 24th century BC, the ancients in China began organized astronomical observation activities. Driven by the two major needs of timing and astrology, China astronomy gradually formed its own system after the 5th century BC, developed the equatorial astronomical coordinate system based on the Twenty-eight Nights and the North Pole, created astronomical instruments such as standard watches, leaky pots, armymen, simple instruments and water observatories, and accumulated rich and continuous observation records.
During the Three Kingdoms period, a catalogue of 283 constellations 1465 stars was compiled, and a large number of strange astronomical records were kept in the history books, including meteor shower records in 687 BC, Halley's comet records in 6 13 BC, aurora records in 32 BC, sunspot records in 28 BC and supernova records in 134 AD.
The study of astronomy in ancient China not only provided a basis for making calendars serving politics and agriculture, but also formed a unique view of the universe, including the concept of infinite universe, the structural model of heaven and earth, the generation and evolution of the universe and the relationship between heaven and man.
Extended data:
In ancient China, there were three modes about the structure of heaven and earth, namely, the mode of covering the sky, the mode of turbid sky and the mode of announcing the night. The "Gaitian Model" imagines the structure of heaven and earth as a left-handed umbrella, on which many celestial bodies are hung. These celestial bodies are upside-down static large flat plates, which are typically expounded in the Zhou Parallel Computation Classic, which was written in the late Western Han Dynasty.
Huntian model regards the sky as a spherical shell with many celestial bodies attached to it and turns left around the polar axis. There are two views about the shape of the earth at rest in the center of the celestial sphere. As for the movement of celestial bodies, both models agree that the stars turn left with the sky, but there is a dispute between the left and right for the sun, the moon and the five elements of gold, wood, water, fire and earth.
The night report model abandons the solid sky hypothesis of umbrella or spherical shell, and advocates that all celestial bodies naturally float in the void filled with gas. Huang Daozhou (1582 —— 1646), a philosopher in Ming dynasty, also put forward a geodynamic cosmological model to explain precession. In the stellar celestial sphere, the earth and the five stars of the sun, the moon and the earth revolve around the same center of the universe, and the period of revolution of the earth is 23376.
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