Why are comets called broom stars ?

A comet, a less massive object that orbits the Sun in a long and flattened orbit. The appearance changes with the distance from the Sun, appearing as a hazy dot when moving away from the Sun, and increasing dramatically when it is closer to the Sun, and the solar wind and the pressure of the Sun's radiation push the gas and dust in the comet backwards to form a long tail. Therefore, it is also known as the "broom star".

In fact, the "broom star" is not necessarily as terrible as the traditional concept says. It's just that the predecessors were frightened because of their incomprehension, and they were terrified when they saw the comet, a mysterious celestial body, appear in the sky from time to time. Since ancient times, "it has always been so" has been true, and "heresy" has always been rejected and rejected.

Comets often drag a broom-like tail on the side of the sun, so they are also called "broom stars", "sweeping stars", and "sweeping comets".

In the clear sky, starry, and silent starry sky, a very strange-looking visitor suddenly broke in, only to see its head pointed and tail spread out, like a broom, this is the comet, which is commonly called "broom star".

Strictly speaking, a comet is not a star, it is just a large cloud of cold air mixed with ice particles and cosmic dust. In recent years, scientists have further discovered that there are also organic compound molecules such as nitrile and hydrogen cyanide in comet.

However, it is still a celestial body, and most comets orbit the Sun in an oblate, elliptical orbit non-stop, this kind of comet is called a "periodic comet", and we have a chance to see it at certain intervals when they orbit closer to the Sun and the Earth. Comets orbit the Sun in very different cycles, the shortest one is called "Comet Enke", the cycle is years, and since its discovery in 1786, it has appeared more than 60 times. Some comets have a long cycle, taking decades or even centuries to see once.

Some comets have cycles of tens of thousands of years, or even longer. These comets are like "passers-by" who, once gone, do not know where to go.

A typical comet consists of three parts: the nucleus, the hair, and the tail. The Hui nucleus is composed of relatively dense solid particles, and the surrounding cloud-like brilliance is the Hui Fa. The Hui Core and the Hui Hair are collectively called Hui Tou, and the long tail behind is called Hui Tail.

This broom-shaped tail is not born, but is formed by the pressure of the sun's rays when it is close to the sun, so it often extends out in the direction of the sun.

As for the volume of comets, no planet in the solar system can be compared with the big comet, the famous Halley's comet, its comet part is as long as 1.85 million kilometers in diameter, as for the length of the comet, the largest, from beginning to end is hundreds of millions of kilometers. Of course, there are many comets in the universe, but most of them are small comets.

Comets are also known as Halley's comets. Renamed"Broom Star"because it looks like a broom. Ha ha.

Because it flies with other asteroids that look like broomsticks.

Categories: Education, Science, >> Science & Technology.

Problem description: As the title suggests! Analysis:

Comet is a very small Tianqing body orbiting the sun in a long and flat orbit, with a unique appearance of clouds and mist. The main part of the comet is the nucleus, which is generally thought to be made up of icy matter. As the comet approaches the Sun, the icy material in the comet's nucleus sublimates into gas, forming cloud-like coma around it.

The gases and fine dust in the coma, pushed by the solar wind, form a long tail on the side facing away from the sun. The tail of a comet is generally tens of millions of kilometers long, and the longest can be hundreds of millions of kilometers. When the comet moves away from the Sun, the tail of the comet gradually shortens and clears until it disappears.

The tail of the comet is shaped like a broom, so the comet is commonly known as the broom star. More than 1,600 comets have been found orbiting the Sun. The famous Halley's Comet orbited the Sun for 76 years.

1985 In 1986, the return of Halley's Comet was observed on Earth.

The comet is known as the broom star in folklore, and the tail of the comet Duan Sen is actually (Kai) Awater vapor and dust; (Correct answer).

b.the phenomenon of atmospheric friction between a comet and the earth's sunball;

c.Meteor.

1. The scientific name of the broom star is a comet, and it was named after dragging the long tail. In the old days, superstition said that the star sweeper swept away, and when he saw it, there was a disaster of war or natural disasters. The current interpretation of ** as a person who will bring disaster or bad luck is a swearful statement, mainly aimed at women.

Jiang Ziya's wife, who helped King Wen Xingzhou (Ma asked Jiang Ziya to take a break from self-celebration, and Jiang Ziya hanged himself after he became developed. So it can only be regarded as an ex-wife) Ma was named a "broom star". Jiang Ziya on the god platform sealed Ma as a "broom star", and later generations were all regarded as a symbol of unlucky women.

2. Ancient numerologists believed that the iron broom was a murderous star, and a woman who committed the iron broom was the most unlucky. According to the oral tradition of the old man, the life of a man is the same as that of a woman, and it is also unlucky to commit an iron broom. Men and women who are subordinate to each other shall be guilty of iron brooms.

Shen (monkey) Zi (rat) Chen (Dragon): Male born in the first month of the month Female born in December Hai (pig) Mao (rabbit) Wei (sheep): Male born in February Female born in August Yin (tiger) Wu (horse) 戌 (dog):

Male born in April Female born in July Wide Potato 巳 (snake) 酉 (chicken) ugly (cow): Male born in June Female born in September The iron broom is also said to be auspicious. Those who were born in the morning are ordered to use an iron broom to sweep their wealth outside, and the more they sweep, the poorer they become, which is the real bad luck; Those who are born in the afternoon and evening are destined to use the iron broom, and they sweep away their foreign wealth to their homes, and the more they sweep away, the richer they become.

For women, committing an iron broom is taboo for the husband's family. The old man said: When the woman gets married, she gathers enough "grains" at her mother's house, and lets the send-off guests who accompany the marriage take them to the gate of her husband's house and throw them on the ground, and the groom hands the bride a new broom, and asks the new prudent mother to sweep the "five grains" into the courtyard, and then wrap them in red cloth and put them in the cabinet of the husband's house to show that the family is prosperous.

Five grains, five different grains. For example: millet, rice, corn, wheat, sorghum, beans, etc.