PS: In ancient China, the Milky Way, also known as Tianhe, Yinhan, Xinghe, Xinghan, and Yunhan, is a milky white bright belt across the starry sky, composed of more than 100 billion stars. Pen, fun, pavilion www. biquge。 info is a faintly glowing band across the starry sky, where the Milky Way intersects the celestial equator in the constellation Aquila and in the northern half of the celestial sphere. The Milky Way outlines a wide and narrow belt on the celestial sphere, called the galactic belt, which is as wide as 30° at its widest point, only 4°~5° at its narrowest point, and about 20° on average, which is only a part of the Milky Way. The Milky Way occupies a very important position in Chinese culture, and there is a famous legend of "Queqiao Meeting",

The Milky Way in the starry sky from northeast to south in the summer night is like a rushing rapids, cascading for thousands of miles. How many beautiful reveries and moving stories have been caused by the Milky Way.

1. Milky Way

In ancient China, the Milky Way, also known as Tianhe, Yinhan, Xinghe, Xinghan, and Yunhan, is a milky white bright belt across the starry sky, composed of more than 100 billion stars. It is a faintly glowing band across the starry sky, and the Milky Way intersects the celestial equator in the constellation Aquila and in the northern half of the celestial sphere. The Milky Way outlines a wide and narrow belt on the celestial sphere, called the galactic belt, which is as wide as 30° at its widest point, only 4°~5° at its narrowest point, and about 20° on average, which is only a part of the Milky Way. The Milky Way occupies a very important position in Chinese culture, and there is a famous legend of "Queqiao Meeting",

The Milky Way in the starry sky from northeast to south in the summer night is like a rushing rapids, cascading for thousands of miles. How many beautiful reveries and moving stories have been caused by the Milky Way.

In fact, the Milky Way in the direction of Swan-Sagittarius can be seen all year round. It's just that at the turn of summer and autumn, I saw the brightest and most spectacular part of the Milky Way. The main constellations through which the Milky Way passes are: Cygnus, Aquila, Fox, Sagittarius, Ophiuchus, Shield, Sagittarius, Scorpio, Temple of Heaven, Ruler, Jackal, South Triangle, Compass, Fly, Southern Cross, Sail, Puttus, Monoli, Orion, Taurus, Gemini, Auriga, Perseus, Cassiopeia and Scorpio. The Milky Way varies in light and shade in the sky, wide and narrow. The narrowest is only 4°~5°, and the widest is about 30°. Why is the Milky Way white? After Galileo invented the astronomical telescope. With this mystery in mind, point the telescope at the Milky Way, which turns out to be made up of dense stars. Why is it only this "belt" region with the highest concentration of stars? It turned out to be a huge lenticular star system composed of more than 100 billion stars, and our solar system is in this system. From the solar system, we see that the edge of the disk is partially a band-shaped celestial region. This region of the sky is most densely projected by stars, and this is what we see as the Milky Way. This vast star system is also named after the Milky Way, called the Milky Way. The limit of the visual magnitude to the naked eye is 5.5 or higher or the light pollution index is 5 or higher to see the Milky Way, if the naked eye cannot see the Milky Way. It is also difficult to see the Milky Way with state-of-the-art observation instruments. In the Northern Hemisphere, the Milky Way is most visible in summer (in Scorpio, Sagittarius, the Summer Triangle, and even Cassiopeia), and in winter it is bleak (in Orion and Canis Major).

2. The Milky Way

The Milky Way is the galaxy to which the Earth and the Sun belong. Because of the bright band projected on the celestial sphere by its main part, it is called the Milky Way by our country. There are more than 200 billion stars in the Milky Way. The Milky Way looks like a large disk with a slightly bulging center. The entire disk is about 100,000 light-years in diameter, and the Sun is located 23,000 light-years from the center of the Milky Way. The drum is a silver heart is a dense area of perseverance, so it looks like a white expanse. The Milky Way looks like a giant vortex with four spiral arms. The solar system is located in one of the spiral arms (Orion arm). Rotate counterclockwise (it takes 250 million years for the Sun to revolve around the galactic core).

The Milky Way is the star system in which the solar system is located. Including 120 billion stars and a large number of star clusters, nebulae, as well as various types of interstellar gas and interstellar dust. Its total mass is 140 billion times the mass of the Sun. Most of the stars in the Milky Way are concentrated in an oblate sphere of space, which is shaped like a discus. The protruding part of the oblate sphere in the middle is called the "nuclear sphere" and has a radius of about 7,000 light-years. The middle part of the nuclear ball is called the "silver core", and the surrounding area is called the "silver plate". On the outside of the silver disk there is a larger sphere, where there are fewer stars and less density, called the "silver halo". The diameter is 70,000 light-years. The Milky Way is a spiral galaxy with a spiral structure. That is, there is a silver heart and two spiral arms, and the spiral arms are 4,500 light-years apart. The speed and period of rotation of each part of the silver vary depending on the distance from the silver core. The Sun is about 23,000 light-years away from the galactic core, orbiting the galactic core at a speed of 220~200 km/s, and the period of operation is about 240 million years.

3. Milky Way matter

About 90% of the Milky Way's material is concentrated in stars. There are many types of stars. According to their physical properties, chemical composition, spatial distribution, and motion characteristics, stars can be divided into five star families. The youngest extreme Race1 stars are mainly distributed on the spiral arms in the galactic disk; The oldest Extreme Constellation 2 stars are mainly found in the galactic halo. Stars often clump together. In addition to a large number of binary stars, more than a thousand star clusters have been discovered in the Milky Way. There is also gas and dust in the Milky Way, which accounts for about 10% of the total mass of the Milky Way, and the distribution of gas and dust is uneven, some are clustered into nebulae, and some are scattered in interstellar space. Since the 60s of the 20th century, a large number of interstellar molecules, such as CO, H2O, etc., have been discovered. Molecular clouds are the main site of star formation. The core of the Milky Way, the galactic core, or the galactic core, is a very special place. It emits strong radio, infrared, X-ray and γ-ray radiation. Its nature is unknown, but there may be a giant black hole there, which is estimated to have a mass of 2.5 million times the mass of the Sun.

4. Legend of the Galaxy

There are many myths around the world that created the heavens and the earth and developed around the Milky Way. Uniquely, there are two similar Greek mythological stories in Greece that explain how the Milky Way came to be. Some myths combine the Milky Way and the constellations, believing that the emulsion of herds of cows has whitened the deep blue sky.

In East Asia, it is believed that the misty bands between the stars in the sky are silver rivers, which we call celestial rivers. Akashaganga is the name given by the Indians to the Milky Way, which means the Ganges in the sky. According to Greek mythology, Hera discovered Zeus's trickery to trick him into feeding the milk that young Hercles had sprinkled in the sky. Another theory is that Hermes secretly took Herrkles to Mount Olympus and sucked Hera's milk while he was asleep, and some of the milk was shot into the sky, thus forming the Milky Way.

In Finnish mythology, the Milky Way is referred to as the Bird's Trail because they notice that migratory birds rely on the Milky Way to guide them as they migrate south, and they also believe that the Milky Way is the true habitat of the birds. Now, scientists have confirmed that the observation is correct, and that migratory birds are indeed relying on the Milky Way to guide them to the warmer southern land in winter. Even today, the Finnish word for Milky Way still uses the word linnunrata.

In Sweden, the Milky Way is considered the Winter Road because in Scandinavia, the Milky Way is the easiest to see in winter. Ancient Armenian mythology refers to the Milky Way as the Straw Thief's Road, which tells the story of a god who, after stealing straw, attempted to escape from heaven in a wooden wagon, but dropped some straw along the way.

And the Galactic Great Array is a large array that uses the power of people's faith to channel the galactic energy in the universe and is used for attack, defense and sealing. (To be continued......)

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