How much do you know about the late autumn constellation? Come on, look at the stars.

What do you know about constellations? Go, look at the stars, and go to "img _ height =" 383 "img _ width =" 900 "data-src ="//imgq3.q578.com/de/1031/3a2d10cf99. Go on, look at the star "img _ height =" 675 "img _ width ="1080 "data-src ="//imgq3.q578.com/de/1031/795c0/kloc-. At present, it has entered the late autumn, and it is getting dark earlier and earlier. For the Beijing area, it is completely dark at seven or eight in the evening. The Pleiades cluster, which was introduced to you before, is now hanging in the eastern sky. There are several famous constellations around. On the left of the Pleiades cluster is Perseus, on the right is Aries and on the left is Auriga. The Pleiades cluster belongs to Taurus, and there is a bright red star directly below it. It is the brightest alpha star in Taurus, and its Chinese name is Bi Suwu.

Aries is a very dark constellation, in which only two adjacent stars are slightly brighter, namely α star with brightness of 2 and β star with brightness of 2.6. The other stars in the constellation are very dark and difficult to distinguish.

Although Aries is inconspicuous in the night sky, it is also one of the 12 zodiac signs, and its popularity is still very high. In astronomy, its position is also very important. The vernal equinox was in Aries two or three thousand years ago, so it was called the first constellation of the ecliptic by the ancient Greeks. Due to precession, the vernal equinox slowly moves westward for about 50 seconds every year along the ecliptic, which has been accumulated for thousands of years. Now the vernal equinox has moved to Pisces to the west of Aries. In another five or six hundred years, the vernal equinox will continue to move to Aquarius, but the title of the first constellation of the ecliptic will always fall on Aries. The symbol of the vernal equinox has always been represented by the symbol of Aries, which is a pair of horns.

What do you know about constellations? Go, look at the stars and go to "img _ height ="1032 "img _ width ="1202 "data-src ="//imgq3.q578.com/de/103/kloc-0. In ancient China, Aries was divided into building lodge and stomach lodge among 28 lodgings, belonging to West White Tiger and Seven lodgings. The West White Tiger consists of seven stars: Kui, Lou, Wei, Chang, Bi, Gou and Shen, which is most suitable for observation after dusk in the coming year 165438+ 10. Among them, the Pleiades and Soapy belong to Taurus. The Pleiades are Pleiades star clusters. During the Warring States Period in China, there was a beautiful picture of a 28-year-old star in the lacquer box unearthed from the tomb of Zeng Houyi, in which the word "Pleiades" was written as a spear. Perhaps the ancients thought that the Pleiades cluster was shaped like the head of a weapon spear, so it was written as a spear and later evolved into a rare "spear"

Not far below the Pleiades, the bright red star Bisuwu and a group of small stars around it form the letter "Y", which is Soapy.

Bi is a small net with a long handle in ancient China, which was used to catch rabbits or birds. It looks like a star. In The Book of Songs Xiaoya, it is said that when the moon rises out of the blue, there will be torrential rain, which means that when the moon approaches, there will be torrential rain. According to historical records, Confucius used this poem to predict rain. This statement is very confusing. Soapy happened to be on the ecliptic. The moon passes through here every month, but obviously it doesn't rain every time. People have made various explanations, but they are always unsatisfactory. Maybe this poem just recorded a heavy rain that just made the moon stay in soapy.

Strangely, not only the people of China, but also the people of ancient Babylon, ancient Egypt, ancient Greece and Rome linked accommodation with rainfall. The ancient Babylonians thought Soapy was a "longevity" and a rain star. The ancient Egyptians observed that whenever Soapy and the sun rose at the same time, the rainy season began. The ancient Romans also believed that staying overnight would lead to continuous rain. This may also indirectly prove the mutual exchange between Chinese and western cultures more than two thousand years ago.

Pistachio is the brightest star in Taurus, and its color is orange-red. It is the first 13 bright star in the whole day, with first-class brightness.

What do you know about constellations? Go, look at the stars and go to "img _ height =" 460 "img _ width =" 779 "data-src ="//imgq3.q578.com/de/10310c1684c. It is located at the top of the left fork of Soapy's Y-shape, representing one eye of this bull. The star at the top of the right fork of the Y represents the other eye of Taurus, but its brightness is much darker. Extending forward from these two forks, you will meet two stars respectively. The top star is brighter, the second bright star in Taurus, and the bottom one is a little darker. The Chinese name is Tianguan. These two stars represent the two horns of Taurus. The whole Taurus is imagined as a fierce bull, with its head down, staring at two big eyes red with anger, and facing Orion, the hunter, with two hard horns. But at this time, Orion is still below the horizon and has not risen.

Near Guanxing, there is a famous nebula-Crab Nebula, which is a remnant left by a supernova explosion, with a brightness of only 8.4, which is invisible to the naked eye. It was first discovered by British doctor and astronomy enthusiast Bevis in 173 1 year. 1774, Frenchman messier listed this nebula as his messier nebula cluster listNo. 1, which was called M 1. 1850, Earl Ross of Britain observed this picture with a large telescope and thought it was shaped like a crab, so he named it "Crab Nebula".

What do you know about constellations? Go on, look at the stars "img _ height =" 704 "img _ width =" 700 "data-src ="//imgq3.q578.com/de/1031/ac7a530e2b6c57b.jpg "src. Later, I found that the crab had grown up. It turns out that the nebula is expanding. According to the expansion speed, the crab nebula was probably only the size of a star more than 900 years ago. Therefore, in 1928, American astronomer Hubble first associated it with supernova explosion. No relevant records have been found in western historical materials, but astronomers from China, India, Arabia and Japan all recorded an astronomical event in Taurus on 1054.

According to the historical records of China, there was a particularly bright "official guest star" at the present location of the Crab Nebula, 1054 on July 4th. According to Song Yaohui, "In May of the first year, I left the East Gate in the morning and closed the sky. The sun is as white as white, the corners are everywhere, and the color is red and white. People I saw on the 23 rd. " It can be seen that the explosion of this supernova is very amazing. It can be seen during the day for 23 consecutive days, and the brightness should exceed Venus. According to historical data, the brightness has reached -6 and so on. After that, its brightness gradually decreased and disappeared after two years. The remains left by this "official guest star" are the Crab Nebula.

Official account name of WeChat: Beijing Institute of Science and Technology

Micro signal: bjast-wx