Why do the stars in the sky form constellations?

Not a constellation composed of stars, the division of constellations is completely artificial, and different civilizations have different divisions and names. Constellations have no uniform and precise boundaries. Until 1930, in order to unify the complicated constellation division, the International Astronomical Union divided the sky into 88 official constellations with precise boundaries, so that every star in the sky belonged to a specific constellation.

Although the importance of constellations has been relatively reduced in modern times, they have not lost their charm for astronomy lovers. Through its fascinating legend, constellations have played an extremely important role in the popularization of astronomy. Whenever there is a major astronomical phenomenon, astronomers, popular science workers and the media will always set off an astronomical upsurge in society, especially among young people.

Extended data

twelve astrological signs

The zodiac is an astrological description of the twelve regions on the celestial sphere where the sun passes through the zodiac, including Aries, Taurus, Gemini, Cancer, Leo, Virgo, Libra, Scorpio, Sagittarius, Capricorn, Aquarius and Pisces.

Although Ophiuchus also passes through the zodiac, it is not in the zodiac used in astrology. The zodiac in astrology only refers to the twelve equal parts of the zodiac, which is different from the zodiac in astronomy. After the International Astronomical Union standardized the constellation boundary in 1928, there were 13 constellations on the ecliptic.

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