Is there a total of 12 constellations or 13?? If yes, what is it??

The thirteenth zodiac sign is Ophiuchus. Unlike the very broad zodiac signs, there is also Ophiuchus among the thirteen zodiac signs. The 12 constellations are usually referred to as the ancient Babylonian civilization that divided the sky into constellations at that time.

In the 6th century B.C., the concept of the ecliptic was proposed, which is the circle occupied by the orbit of the earth on the celestial sphere. At that time, the zodiac was distributed with twelve constellations, because the movement of the stars is now distributed on the zodiac with thirteen constellations.

Due to changes in the Earth's axis, the movement of the solar system, and the movement of the stars themselves, the position of the zodiac constellation today is very different from that of 2,000 years ago. Since the Earth's axis oscillates in a cycle of 26,000 years, the position of the ecliptic in the sky also changes. As a result, every 2,000 years or so, the arrival of the Sun in a particular house is delayed by about a month.

In addition, the zodiac now crosses not only the twelve constellations, but also the thirteenth constellation, Ophiuchus.

Ophiuchus is born from November 30 to December 17. Ophiuchus is one of the equatorial constellations, located south of the constellations Hercules, north of Scorpio and Sagittarius, and west of the Milky Way as seen from Earth. Ophiuchus is the only sign of the zodiac that intersects with another sign, Serpentus, and is also the only sign that crosses the celestial equator, the galactic and the ecliptic.

Ophiuchus is large and wide, rectangular in shape, and the celestial equator passes diagonally through this rectangle.

Ophiuchus is actually the thirteenth constellation called Ophiuchus, because a British astronomer found that there are always some errors in time every year when observing the changes in the stars, and if it goes on, the time error will become larger and larger, so a new constellation Ophiuchus will be added between Scorpio and Sagittarius, becoming the thirteenth constellation we are talking about today.

There is a certain scientific basis for constellations. The scientific basis for constellations is the Barnum effect, and the other is the Rosenthal effect. The effect of these two effects on the population is actually the most scientific explanation for the horoscope.

This is actually related to psychology, it is a kind of psychological suggestion, everyone actually doesn't know themselves so well, they can only label themselves, compare them with the horoscope table, this psychological suggestion will make you more and more like the person you want to become, so everyone believes it. I don't know when it began, but the horoscope has slowly infiltrated into our lives. Some people believe in horoscopes, while others scoff at them.

The scientific principles of constellations.

Many people think that horoscopes are superstitious, but in fact, there is a certain scientific truth in the constellation theory, because the important organs of the fetus, the brain, eyes, spine, limbs and everything begin to develop within three months of pregnancy, which largely determines the quality of the born baby. These three months are more conducive to the development of these organs if they fall in the summer, and not so well in the winter.

It is also true that the best people in the mid-latitudes of the Northern Hemisphere usually have more birthdays in the first half of the year, and the opposite is true in the Southern Hemisphere, and the closer to the equator, the smaller the difference caused by such birthdays. The vast majority of Nobel laureates in the United States have birthdays in the first half of the year.

The climate in the south is good, and birth in the second half of the year will not affect the development of the fetus, so there is a saying that southerners are smarter than northerners. In this case, it seems that there is some truth to dividing people's personalities according to zodiac signs.

December 13 is Sagittarius.

Sagittarius strengths: optimistic, positive, honest and frank, love of freedom, lively and humorous, versatile.

Sagittarius disadvantages: careless, outspoken, easily offended, impatient, sensitive and impetuous.

Sagittarius Features:

Characteristics of the shooter man: advocating freedom, unrestrained, adventurer, open-minded, attaching importance to justice and justice; Hedonist, weak willpower, self-indulgence, three-minute heat.

Characteristics of Sagittarius women: kind-hearted, free-spirited, not afraid of challenges, love to be lively, and the king of children; Reckless, blindly optimistic, and unable to withstand pressure.

Basic characteristics: Sagittarius people are optimistic and cheerful by nature, enthusiastic and unrestrained, advocating self-reliance, responsive, very creative, friendly and very heroic, very Shanghainese style, and quite popular. Sagittarius people love freedom and hate being tied down, their personality is simple and direct, not scheming, but they are also prone to willfulness.

Specific traits: 1. Sagittarius is the ninth sign on the zodiac, and the ruling planet is Jupiter. Have a relaxed, cheerful, lively and cheerful outlook on life. Sagittarius people have a frank personality, treat others sincerely, warmly, positively and optimistically, and are very popular.

2. Sagittarius people, frank and intelligent, like to be mavericks, quite intuitive and inspiring others, open-minded, adaptable, informal, humorous, and know how to enjoy life. For Sagittarius, life is a series of adventures, and they like to pursue new and interesting experiences.

3. Sagittarius people, Iwachibana is very good friends, moral, friends all over the world, and there are noble people everywhere. Sagittarius people are energetic and efficient, and can wear many hats, but they are often anticlimactic and easy to give up halfway; Adventurous and agile.