Constellation interpretation

According to Ptolemy's catalog in the 2nd century A.D., there were 48 constellations, each named after a mythical figure, animal or artifact, and 40 constellations were later added by Greek and Roman people to supplement the blank sky area (such as the sky area around the south celestial pole, which is invisible in the Mediterranean region). In order to facilitate the study of astronomy, the starry sky is divided into several regions, each of which is called a constellation. Modern astronomy is divided into 88 constellations such as Cygnus, Andromeda and Telescope. There was a similar concept of star officer in ancient China. China has traditionally called a group of stars by constellations, such as Santai, Wenchang and Zhinv, which can all be called constellations. Interpretation of Sima Zhen's Historical Records of Heaven Officials in the Tang Dynasty: "Constellations have advantages and disadvantages. Cao Ruo, the official of man, is in office, which is called Tianguan. " Tang Du Mu's poem "Self-expression": "The stars are dark all night, and the flute is idle." Xu Chi Goldbach guessed geological light: "Sometimes in the middle of the ocean, looking around, we rely on compasses, theodolite and stars to determine the direction."

Word decomposition

Explanation of stars: Astronomically speaking, stars refer to celestial bodies that can emit or reflect light in the universe; Generally speaking, it refers to the celestial bodies that glow in the sky at night: planets. Stars. A planet. Satellite. Dai Yue. Small particles: Mars. A counting point on a weighing instrument, such as a fixed disk star. Badge on the officer's collar: five-star seat description: seated. Teahouse. Discuss. Throne. Here you are. Motto. Something that holds an object. Base. The region of the starry sky, a star: constellation. Lyra quantifier, mostly used for larger or fixed objects: a mountain. Radical: wide.