About the Cowherd and the Weaver Girl. It's urgent ! Please help, thank you ~ ~!

About the Weaver Girl, there are several references to her in ancient books. "History of the Later Han Dynasty": "Weaver girl, the son of heaven is a real girl." Historical Records: "Samsung, at the eastern end of the cat, is also a goddess." Jiao said, "In the east of Tianhe, there is a little star called Weaver Girl." Tianhe is a band of light that we see across the sky at night; The ancients in China also called it Han Yin, Xinghe, Tianhang, Yinhuang, He Ming and Gaoshan. Now astronomers call it the Milky Way. Vega is in the east of the Milky Way, and its western name is Vega. In the past, China people divided the sky into twenty-eight places and three places. Now astronomers all over the world have decided to divide the sky into 88 "constellations". Vega is the brightest star in Lyra. There are five stars in the nearby galaxy that are almost as bright as a cross. These five stars belong to cygnus. There are three stars in the west of the Milky Way. The brighter star in the middle is Altair, also called Altair. In ancient China, they were called Hegu, Hegu and Huanggu, while in the west they were called Altair. Cowherd is the brightest star in Aquila. It and the two stars with smaller brightness on both sides are sometimes called "shoulder pole stars". According to the myth, the two stars next to them are Cowherd and his children. Swan is floating in the Milky Way, a girl is weaving by the river, and a shepherd with two children is herding cattle on the other side. What a beautiful picture this is.

Qin Guan, a poet in the Song Dynasty, was also excited by the story of Cowherd and Weaver Girl, with joy in sadness and joy and sadness in joy. He skillfully expressed the artistic conception of this touching story with long and short sentences. Que Qiao Xian is a beautiful poem in Ci.

The thin clouds in the sky are changing, the meteors in the sky convey the sadness of acacia, and the endless galaxy I quietly crossed tonight.

On the seventh day of autumn dew and autumn, it is time to meet, mostly those who are together in the world, but the appearance of husband and wife.

Common complaint against acacia, tender feelings like water, meet each other as if it were a dream, when it is hard to see the bridge.

As long as two people love us to the end, why covet my Heron?

Once upon a time, many people in our country believed that the Cowherd and the Weaver Girl really met on the Qixi River. That night, women begged the wise with needles and worshipped the Weaver Girl with melons and fruits. This story is also often used as the material of drama. The play Cowherd and Weaver Girl is often seen in Peking Opera, drama and local operas all over the country.

In the play, Cowherd is a child herding cattle in the countryside. He refused to help his brother farm, his sister-in-law drew water and his mother did housework. Cowherd is just playful and loves to have strange fantasies. His best friend is the old cow he guards. One night, he saw the fairyland in the sky in his dream. He took the old cow and set off for the sky. At the same time, there is a weaver girl in the sky who wants to come down and enjoy the warmth of the world. The Queen Mother pitied the loneliness of the Weaver Girl, and sent a couple of gold and magpies to take the Weaver Girl to the ends of the earth to see the Cowherd. "Meet in the Golden Wind and Jade Dew" is really "winning countless people". A couple was sent to the cloud nine for their honeymoon.

Cowherd has traveled all over heaven for a long time and feels bland. Weaver girl will continue to brocade clothes and can't stay with him all the time. Cowherd became more and more bored. Knowing from Golden Boy's mouth that his family was looking forward to his return day and night, he told Weaver the idea of going home. Weaver Girl is determined to go underground with him to enjoy the lovely spring. Unfortunately, the secret was kept secret, and the Queen Mother of the West knew about it. She came to draw a milky way with a hairpin to separate the cowherd and the weaver girl, and only promised to send magpies to form a flyover on Tanabata every year to let them cross the river once. Cowherd returned to the world and was glad to see his mother, brother and sister-in-law again. From then on, he stopped being lazy and having meaningless fantasies, and worked hard every day. He realized that beauty can also be created in real life. He smelled the dirt and understood the meaning of life. His only regret is that the weaver girl he loves can't come to work with him and enjoy the warmth of the world together. But you can meet once a year on Tanabata, which is much better than farewell.

There are several songs in a play, one of which is Peng Yu's Meet the Magpie:

Who knows when it will last forever?

Who knows how many years to hate?

I spent a long year, so it is rare to have this wonderful night on Tanabata.

But meeting at Magpie Bridge is infinite sorrow.

Dreams are long and nights are short.

Seeing that the morning star in Dongshan has appeared, it will be dawn soon.

What can be done is that the magpies are noisy and urge everyone to go their separate ways.

I will wait until next year's Tanabata is coming.

To this day, there are still many people in our country who really believe that Cowherd and Weaver Girl meet once a year to cross the river on Tanabata, and many women still ask Weaver Girl for help that night. Unfortunately, science tells us that the story of the Cowherd and the Weaver Girl is not true, it is just a poetic myth. In recent years, the progress of astronomy has made our understanding of this star, other stars and the Milky Way much clearer than before. The Milky Way is not a river. There is not a drop of water or a bridge in the galaxy. It is a collection of many stars and nebulae, which can be seen with large telescopes. Although the two stars, Cowherd and Weaver Girl, are not absolutely "unchanged", they can't be seen moving each other at all on Tanabata, let alone "crossing the river". On Tanabata every year, one is in the east of the river and the other is in the west of the river, sighing at each other. The progress of science has broken their dreams, which reminds the author of Cao Xueqin's couplets for the dreamland archway:

Thick soil and high sky, I can sigh the endless feelings of ancient and modern times;

Find a partner to get married, poor situation, debt is difficult to pay back.

The word "constant" of a star is only relative to the word "line" of a planet. In fact, no star in the sky is absolutely "unchanged"; Every star is moving, moving more and moving less. Altair moves 0.658 angular seconds on the celestial sphere every year; In addition, it left us and ran out at a speed of 26 kilometers per second (93,600 kilometers per hour). So the speed of Altair in space is dozens of times faster than the fastest passenger plane on the ground. Weaver is slow, but she can still win the women's 100 meter race. She moves on the celestial sphere for 0.345 seconds every year, leaves us and runs out at the speed of 14 km per second.

Cowherd and Weaver Girl are much bigger and brighter than the sun. Why do we just look like two small lights? That's because these two stars are much farther away than the sun. The brightness of the cowherd is 10.5 times that of the sun, its diameter is 70% larger and its mass is almost 70% larger. Weaver Girl's luminosity is 60 times that of the sun, its diameter is 2.76 times that of the sun, and its mass is almost 3 times that of the sun. So the weaver girl is bigger, brighter and heavier than the cowherd, and she is also the elder sister of the cowherd. The cowherd is 154 trillion kilometers away from us, which is 1 10,000 times farther than the sun. The distance of the Weaver Girl from us is 250 trillion kilometers, which is 1.7 million times farther than the sun. The weaver girl is not only bigger and brighter than the cowherd, but also far away, so we look almost as bright as the two stars. It takes 16 4 months for light to reach our eyes from Altair. It takes 26 years and 5 months for light to shine from Vega. Cowherd and Weaver Girl are not in the same direction, and the distance between them is 16.4 light years. Radio waves travel at the same speed as light. If the Cowherd wants to make a wireless call to the Weaver Girl, it will take 32 years to receive a call back.

Stars vary greatly in size, luminosity, temperature and color, but there is little difference in mass. Since the 20th century, astronomers have classified many stars, just as biologists have classified animals and plants.

Scientists have proved that sunlight and starlight come from atomic energy. So the Cowherd and the Weaver Girl can also be said to be two very big atomic bombs. They convert the atomic energy in the stomach into light and emit it. When people appreciate their brilliant talents, they fantasize about a sad and touching story.

Fairy tales and fairy tales will not be destroyed because of the progress of material civilization. They can improve the imagination of teenagers, can be used as an amateur pastime for adults, and can also be used as raw materials for various arts. China's Cowherd and Weaver Girl can be juxtaposed with the Greek Odyssey, golden fleece and the French Ring of Nibelum. On Tanabata every year, we might as well continue to tell the story of Cowherd and Weaver Girl: on the one hand, we can appreciate this poetic myth, on the other hand, we can also take the opportunity to publicize science and let ordinary people notice many new knowledge about stars discovered by scientists for us.

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This is a beautiful love story that has been passed down through the ages and has become one of the four folk love legends in China.

Legend has it that there is a Vega and an Altair in the sky. Weaver Girl and Penny are kindred spirits, and they have a heart in mind. But it is forbidden for men and women to fall in love and fall in love privately. The Weaver Girl is the granddaughter of the Queen Mother, so the Queen Mother demoted Penny to the world and made the Weaver Girl Brocade as a punishment.

Weaver's job is to weave layers of beautiful clouds on the loom with a magical silk, and change their colors with time and season. This is the "heavenly clothes". Ever since Penny was demoted, Weaver Girl has been in Lacrimosa, thinking about Penny with a frown. She sat by the loom and kept knitting beautiful brocade, in order to win the favor of the queen mother and let Penny return to heaven as soon as possible.

One day, several fairies begged the Queen Mother to see the Lian Bi Pool on earth. The queen mother was in a good mood today and promised them. Seeing that the Weaver Girl was unhappy all day, they begged the Queen Mother to let the Weaver Girl go with them. After the punishment, the heavenly queen felt sorry for her granddaughter and told them to go and come back quickly.

After being demoted, Penny was born in a farmer's home and named Cowherd. Later, when his parents died, he lived with his brother and sister-in-law. Sister-in-law is very unkind to Cowherd and wants to separate from him. They only gave him an old cow and a broken car, and the rest were monopolized by their brother and sister-in-law, and then they separated from the cowherd.

Since then, the cowherd and the old cow have lived together. They cut thorns, cultivated land and built houses in the wasteland. A year or two later, they built a small home and barely made ends meet. However, except for the old cow who can't talk, Cowherd is the only one in the deserted home, and life is quite lonely. The cowherd doesn't know that the old cow is the Taurus in the sky.

On this day, the old cow suddenly spoke and said to the cowherd, "Cowherd, today you go to Bilianchi, where some fairies are taking a bath." You hide that red fairy costume, and the fairy in the red fairy costume will become your wife. " Cowherd was surprised and happy when he saw the old cow talking, so he asked, "Niu Ge, can you really talk?" Is it true what you said? "The old cow nodded, and the cowherd quietly hid in the reeds beside Bilianchi, waiting for the arrival of the fairies.

After a while, the fairies really floated in, took off their light clothes and jumped into the clear stream. The cowherd ran out of the reeds and took the red fairy's clothes. When fairies saw someone coming, they quickly put on their clothes and flew away like birds, leaving only fairies who could not escape without clothes. She is a weaver girl. Seeing that her fairy clothes were taken away by a young man, the Weaver Girl was ashamed and anxious, but she was helpless. At this moment, Cowherd came over and told her that he could not return her clothes unless she promised to be his wife. The weaver girl looked intently and realized that the cowherd was the cow she missed day and night, so she shyly agreed to him. In this way, the Weaver Girl became the wife of the Cowherd.

After they got married, they worked hard, loved each other and lived a very happy life. Soon, they gave birth to a son and a daughter, very cute. Cowherd and Weaver Girl thought they could be together for life and grow old together.

However, when the Queen Mother learned of this incident, she flew into a rage and immediately sent a fairy to catch the Weaver Girl and make amends.

On this day, the weaver girl was cooking, and the cowherd hurried back from the fields. His eyes were red and swollen, and he told Weaver, "Niu Ge is dead. Before he died, he asked me to peel off his cowhide and put it away. One day, I can wear it and fly to the sky. " Hearing this, the Weaver Girl wondered. She knew that the old cow was the golden bull in the sky, and she was demoted to heaven just because she said a few good words for the demoted morning cow. How can you suddenly die? The weaver girl asked the cowherd to peel off the cowhide and bury the old cow.

At this time, the sky is stormy, and the heavenly soldiers will fall from the sky. It is hard to say that it is escorting the Weaver Girl to the sky.

Flying, flying, Weaver Girl heard the voice of Cowherd: "Weaver Girl, wait for me!" " "Looking back, the Weaver Girl saw the Cowherd coming with a pair of baskets and two cowhide children. Slowly, the distance between them is getting closer and closer, and the weaver girl can also see the lovely faces of her children. The children opened their arms and shouted "Mom". Seeing, the Cowherd and the Weaver Girl are about to meet. But at this moment, the queen mother came in with Xiangyun. She took off the golden hairpin on her head and rowed it among them. At the moment, a Tianhe wave is caught between the Weaver Girl and the Cowherd and cannot be crossed.

The Weaver Girl looked at the Cowherd and his children across the Tianhe River and cried herself hoarse. Cowherd and children also cried their eyes out. Their cries and the children's cries for "mom" are so heart-wrenching and tearful that even the fairies and immortals watching the battle feel sad and unbearable. Seeing this situation, the Queen Mother was slightly moved by the loyal love of the Cowherd and the Weaver Girl, so she agreed to let the Cowherd and the children stay in the sky and let them meet once a year on July 7.

From then on, the Cowherd and his children lived in the sky, separated from the Weaver Girl by a Tianhe River. Among the stars in the autumn night sky, we can still see two big stars on both sides of the Milky Way. They are Vega and Altair. The Altair has two little stars, namely a son and a daughter of the Cowherd and the Weaver Girl.

On July 7, the Cowherd and the Weaver Girl met, and countless groups of magpies flew to bridge the gap for them. On the Magpie Bridge, Cowherd and Weaver Girl meet again! The Weaver Cowherd is affectionate, hugging the children, and there are endless words and feelings!

Legend has it that on July 7th every year, if people listen quietly in the vines under the grape trellis, they can vaguely hear Yue Xian's performance, and the Weaver Girl and the Cowherd are talking affectionately. To put it bluntly, it's been a long time before I met her, but it's been longer since we broke up. They look forward to meeting again on July 7 of the next year every day.

Later, on the seventh day of the seventh lunar month, it is said that when the Cowherd and the Weaver Girl meet at the Magpie Bridge, the girls will come to the flowers and the moon, look up at the stars and look for the Cowherd and the Weaver Girl on both sides of the Milky Way, hoping to see their annual meeting, and pray to God that they will be as ingenious as the Weaver Girl and that they will have a happy marriage, thus forming China's Valentine's Day.

science

Do Altair and Vega really meet on Tanabata every year?

When enjoying the cool outdoors in summer night, you can see a bright star overhead and four small stars beside it, like weaving shuttles, that is Vega. Opposite the Milky Way, there is a bright star in the southeast and a small star on each side, namely the Altair, which faces Vega across the river.

Myth is a myth after all. Cowherd and Weaver Girl can't meet overnight. Altair and Vega are very distant stars. They are all bigger than the sun, just because they are very far away from us. In astronomy, measuring the distance between stars is mostly calculated in "light years". A light year is the distance that sunlight travels at a speed of 300,000 kilometers per second in 65,438+0 years. Altair is 0/6 light years away from us/kloc-and Vega is 27 light years away from us, so it looks like a small light spot.

The distance between Altair and Vega is also very far, 16.4 light years, which is similar to the distance between Altair and the earth. No matter how fast Altair runs, it can run 100 km every day, and it will take 4.3 billion years to meet Vega. Even if it is replaced by a spaceship flying 1 1 km per second, it will take 450,000 years to fly to Weaver Girl. Let alone meet overnight, even if you make a phone call, it will take 16.4 years to get in touch with each other!