Brief introduction of sun, moon and five stars

People with primary education should know that celestial bodies orbiting the sun in elliptical orbits are called planets. The planet itself generally does not emit visible light, but emits light by reflecting sunlight on its surface. There are nine planets in the solar system. Besides the earth itself, people first discovered Mercury, Venus, Mars, Jupiter and Saturn. Uranus, Neptune and Pluto were discovered after the establishment of modern telescopes and Kepler's law and Newton's law of universal gravitation. On the sky background of various constellations composed of stars, the planets have obvious relative motions, and almost all of these motions are along the ecliptic. They appear and disappear in the stars, and go forward and backward. "Walking" means walking; The original meaning of the word planet refers to this celestial body wandering in the sky.

The ancients called the five planets of gold, wood, water, fire and earth five latitudes. Weft is the horizontal line of the fabric. These five planets run from east to west in the sky like latitudes, so they are called five latitudes. Also known as Lindera. The ancients also put the sun, the moon and the five stars together, called the sun, the moon and the five stars, and called the seven houses. Yao Dian in Shangshu records "Yu Yuheng, Zheng". Legend of the God of Wealth in Song Dynasty: "Seven strategies, the sun, the moon and the five stars. Seven, running in the sky, late and fast, Jews have political affairs. " The sun, the moon and the five stars are also called seven latitudes. It was the ancients who mistook the sun and the moon for planets. In fact, the sun is a star and the moon is a satellite. Also known as the seven obsidians.

Jupiter has been recorded in ancient Oracle Bone Inscriptions in China, and there was a five-star theory in the Warring States Period. These five stars were originally called Chen Xing, Taibai, Gan Ying, Suixing and Zhenxing, which were also the general names of these five stars in ancient times. These five stars are called golden wood fire, water and earth, which are produced by matching five elements on the ground with five planets in the sky. Records of the Historian Tianguan Book records that "there are five stars in the sky and five elements on the ground."