Division of thirteen constellations

In addition to the well-known twelve constellations, the other one is Ophiuchus. When people observe the dividing line of constellations, they will find that the path from the sun to Scorpio is less than one week, but it takes nearly three weeks to pass through nearby Ophiuchus. This is not because Scorpio is small, but because the sun only passes through a small corner of Scorpio, which makes the time for the sun to pass through Scorpio very short.

The twelve constellations mentioned at ordinary times are in astrology and have nothing to do with astronomy.

In astronomy, the English word for Constellation is "constellation", which means "constellation" and "constellation". The constellation referred to in astrology is "constellation", which is translated in English-Chinese dictionaries: "Zodiac" is also translated freely in English and Chinese astronomical vocabulary; In Ying Ying's dictionary, it is explained in more detail: "one twentieth of the zodiac", which means "twelve ecliptic divisions". As far as Dictionary is concerned, which is so important to human beings all over the world and must be correct, it clearly distinguishes astronomical constellations from astrological constellations. What's more, there is an explanation of the zodiac. For astrology, only the twelve constellations that are most widely distributed on the ecliptic are more meaningful. The names of Virgo, Aquarius, Sagittarius and Libra in astrology are wrong for astronomy. They should be Virgo, Aquarius, Sagittarius and Libra. Therefore, if we use astrology to explain astronomy, it would be all wet and absurd. In fact, "Ophiuchus" is not a new discovery, and it has been recorded in poetry since 270 AD.

Astrology and astronomy are not the same sky. Astronomy observes all celestial phenomena, while astrology only regards the twelve constellations as a symbol, and divides the ecliptic plane of the whole celestial sphere into twelve equal parts, each named after a constellation.

Astrology is just astrology, and the twelve constellations are just a synonym. They are twelve "signs". Let astrology and astronomy have different beautiful starry sky!

The twelve constellations in astrology originated from the Babylonian division of constellations. But in such a long time, due to the precession of the earth and the different ways people draw constellations later, the time for the sun to pass through the twelve constellations is no longer the same, and now there are thirteen constellations.