Langzhiwan constellation

How can I take my girlfriend to see the stars?

Cowherd and Weaver Girl Constellation Popular Science

The annual Valentine's Day in China is here again. Have your boyfriends prepared gifts for female tickets?

Today, Bian Xiao teaches you to give a female ticket a special gift, that is, show her the stars, and then find Altair and Vega in the starry sky. Isn't it romantic?

Fortunately, Altair and Vega are actually two stars that are easy to find in summer-in fact, this is nonsense. If it is not easy to find, how can the ancients make up the story of the meeting of the magpie bridge?

First of all, if you want to know the starry sky, you must find some distinctive stars, and then find other stars on this basis. Fortunately, Altair and Vega are the stars with the most tè points in summer.

On a summer night, when you look up, you can easily see three bright stars in the triangle. This is the famous summer triangle.

Among them, the star located in the southeast direction (the starry sky corresponds to the ground, so it is the upper north, the lower south and the right west of Zuo Dong), called Tianjin IV, is the brightest star in Cygnus.

The northernmost is Vega. Vega's international scientific name is Alpha Lyra, which is about 25.3 light years away from the Earth.

The other vertex of the triangle is Altair, also called Altair. The official name of Altair in the world is Alpha Eagle, which is about 16.7 light years away from the earth. In fact, the diameter of Altair is 1.68 times that of the sun, and the diameter of Vega is 3.2 times that of the sun. If they are really a couple, I'm afraid the naive girl is Altair.

And the distance between the two planets is about 16 light years. What is this concept? If the Monkey King sent the Cowherd to see the Weaver Girl, it would take about 90 years to send the Cowherd away according to the Monkey King's one-second somersault. If there are really magpies on the bridge, if each magpie is 45 cm long, it will take about 3.4 billion magpies.

Don't broadcast the last paragraph, and don't tell your girlfriend ~

In addition, if your girlfriend is Sagittarius, Scorpio and Libra, then you can help your girlfriend find her constellation in the starry sky.

First, you can reach Altair along Tianjin No.4 Road, and then extend it by almost the same length. You can see that these six stars are in the shape of buckets. This is China's traditional six stars, which is Sagittarius in astronomy, that is, Sagittarius in astrology.

Looking west along Sagittarius, there is a particularly bright star, which is red. This is the famous antares. The old saying "fire in July" refers to it. And it is the brightest star in Scorpio.

If you look east along Sagittarius, you will see a triangle-like shape, which is Capricorn. Sorry Capricorn, because the brightest star here is not very prominent.

Ok, that's it for this issue of the sky map. On Qixi night, boys remember to read this article and take their girlfriends to see Altair and Vega ~

Ladies, after reading this article, show your boyfriend to someone else's boyfriend (haha, just kidding, you can find your constellation in the night sky)

What constellation is Cowherd and Weaver Girl?

There is an Altair in the night sky, and opposite it is a white and bright Vega. These two stars are more shining and moving in the dark night sky. Weaver girl looks handsome, and her watery eyes and cherry mouth make her look beautiful and lovely. Her bright black hair makes her more attractive. She slowly waved her gentle and slender hands and began to weave on the loom, but where was her heart? She thinks about Cowherd all the time: Cowherd, Cowherd, how are you doing now? Are you thin and stuffy? Do you still love me ? Many, many questions, but no reply. The weaver girl thought for a day, but she couldn't knit a cloth in a day. The more she thought about it, the more sad she became, and finally she cried. She kept crying, tears rained down, and she was hungry, so that the original beautiful starry sky was infected by the sadness of the Weaver Girl, and the rotten cover leaked out sadly. The Weaver Girl has a hope. She looked at the Milky Way day after day, hoping that one day the emperor would allow her to be with the cowherd xiāng. Separated by two stars and one water, the distance between them seems very close and far. The weaver girl looked at the long-lost cowherd and said nothing. The Cowherd saw the Weaver Girl and said nothing. They just stared at each other, and they wanted to talk to each other, but they couldn't say a word. Weaver tears across the white face, suddenly ran to each other, affectionate hug! They have been hugging each other and become the brightest point in the sky. Their love story will be passed down to the world forever, and their love will never stop and last forever.

When did the Cowherd and the Weaver Girl Star appear?

"On the seventh day of July, in the Palace of Eternal Life, we secretly told each other in the quiet midnight world. We hope to fly in heaven, two birds grow together on the earth with the same wing, two branches of a tree ... "Born between heaven and earth, the vast starry sky and the vast land have brought endless reverie to mankind, and have produced countless touching stories of heaven, earth and people since ancient times. As a representative of this kind of story, the legend of Cowherd and Weaver Girl has been circulated in China and has been circulated in the cultural circle of Chinese characters for a long time.

The legend of Cowherd and Weaver Girl is the result of our ancestors' imagination of looking up at the starry sky.

China's earliest collection of poems, The Book of Songs, already contains the rudiment of the legend of the Cowherd and the Weaver Girl. Xiaoya, a book of songs in Dadong, wrote: "There is Han Yu, and there is light in prison. _ He's daughter, seven times a day. Even if the weaver girl is busy, she can't knit a stripe well. _ Penny, don't take the box. " This passage shows that as early as the Western Zhou Dynasty nearly 3000 years ago, our ancestors named the two planets in the sky "Petunia" and "Weaver Girl". The poem called the Weaver Maid "non-reported", implying that people had imagined the Weaver Maid as a spinning and weaving woman at that time, and called Penny "not taking the box", which was the image of Penny as a sacrifice to the longicorn.

Altair and Vega, located outside the solar system, are two stars that can emit light and heat like the sun. They are located on both sides of the Milky Way and are very close to each other on the celestial sphere, which looks much better than other stars.

Altair, the scientific name of Altair, is the brightest star in Altair constellation. Its mass is 1.8 times, radius is 1.6 times, luminosity is1/kloc-0 times, and its surface temperature is at least 1000 degrees higher than that of the sun. Vega is also called Vega I or α (Lyra α, bigger than Altair. Its mass, radius and luminosity are 2./kloc-0 times, 2.3 times and 40 times that of the sun, respectively, and its surface temperature is nearly 4000 degrees higher than that of the sun.

When the light emitted by these two stars reaches the earth after a long space journey, the light intensity has become very weak, and they can only be seen on a clear night. Even so, Vega is still the second brightest star in the northern hemisphere, second only to arcturus. Like arcturus and Sirius, Vega is one of the brightest stars near the sun.

Next to Vega, four stars form a small diamond. This small diamond is endowed with the function of shuttle. It is said that while weaving with a shuttle, the Weaver Girl looked up at the Cowherd (Hegu II) and her two children (Hegu I and Hegu III) on the east bank of the Milky Way. The couple are so far apart that they are 16 light years apart! Their magpie bridge is another bright star around-Tianjin IV, that is, "the sky spans kǒu", which is 0/500 light-years away from the earth/kloc. Legend has it that the magpie bridged the bridge at this position, allowing the cowherd and the weaver girl to meet.

In the summer night sky in the northern hemisphere, the Altair, Vega and Tianjin IV (Cygnus α) in Cygnus form the famous "Summer Triangle", which appears over the mid-latitude of the northern hemisphere at midnight in summer, so it is very easy to identify. In addition, this geometry can also be seen in the eastern sky in the early morning of spring. In autumn, the Summer Triangle appears in the western sky in the evening and lasts until 165438+ 10.

On the night of early autumn in July, the Milky Way just turned north and south. At this time, people look up at the starry sky, and the morning glory and the weaver girl on both sides of the Milky Way just face each other across the river. When the ancients looked up at this kind of astrology and saw this scene, the familiar legend of the Cowherd and the Weaver Girl came to mind.