Questions about the milky way galaxy

Question 1: What is the Milky Way? The Milky Way was also called Tianhe, Han Yin and Xinghe in ancient China. It is a faint luminous band across the starry sky. The Milky Way intersects the celestial equator of Aquila and is located in the northern hemisphere. The milky way draws a band with different widths on the celestial sphere, which is called the silver band. Its widest point is 30, and its narrowest point is only 4 ~ 5, with an average of about 20. This is just a part of the galaxy. The Milky Way occupies a very important position in China culture, including the famous legend "Meet at the Queqiao Bridge", literary works and televisions with the same name, computers with the brand of "Yinhe" and typhoons called "Yinhe".

Question 2: What does the Milky Way mean? The Milky Way is the galaxy where the solar system is located, including 65,438+0,000 to 400 billion stars, a large number of star clusters and nebulae, and various types of interstellar gas and interstellar dust. The diameter of the Milky Way is about10 ~120,000 light years (excluding the silver corona and peripheral materials), and the thickness of the center is about120,000 light years. The total mass of the Milky Way is 2 1000 billion times that of the sun (calculated in 20 15 years, with an error rate of 20%). Andromeda and its neighbors are the larger galaxies in this galaxy group.

The Milky Way is a rod-spiral galaxy with a huge disk structure, consisting of a bright and dense nuclear sphere, two main spiral arms and two unformed spiral arms, which are 4,500 light years apart. The sun is located on the arm of Orion, an arm of the Milky Way, and the distance to the center of the Milky Way is about 26,000 light years.

At the center of the Milky Way is a supermassive black hole (Sagittarius A), which consists of a silver core, a silver core, a silver disk, a silver halo and a silver crown from the inside out. Most of the central regions of the Milky Way are old stars (mainly white dwarfs [3]), and most of the peripheral regions are new young stars. There are more than a dozen satellite galaxies around hundreds of thousands of light years, of which large magellanic cloud and small magellanic cloud are the largest. The Milky Way keeps growing by devouring dwarf galaxies around it, although this process is quite long.

Astronomer Maria? Germain believes that the study of the disk surface of the galaxy's star cluster shows that the inner star cluster of the galaxy is older, while the outer stars are younger. It can be inferred that the formation process of galaxies started from the inside, and then gradually evolved to a diameter of more than 654.38+ million light years. Scientists said that the survey also found new evidence that the Milky Way also annexed many small galaxies during its growth, and celestial bodies from other galaxies merged into the Milky Way. Ever, Stephen? Hawking claimed that his observations showed that the center of the Milky Way was a huge black hole.

Question 3: Adjective: What Milky Way? The vast galaxy

The vast galaxy

Beautiful galaxy

Distant galaxies

Endless galaxy

The Milky Way, also known as Tianhe, Han Yin, Xinghe, Xinghan and Han Yun in ancient China, is a milky bright belt across the starry sky. The Milky Way intersects the celestial equator in Aquila and is located in the northern hemisphere. The milky way draws a band with different widths on the celestial sphere, which is called the galactic belt. Its widest place is 30, and its narrowest place is only 4 ~ 5, with an average of about 20, which is only a part of the Milky Way.

The Milky Way occupies a very important position in the culture of China, and there is a famous myth and legend of the Han nationality.

The Milky Way can only be seen on a clear night, which is caused by the light of countless dark stars. The Milky Way is not the Milky Way, but a part of it. The Milky Way contains hundreds of billions of stars, with a total mass of about 600 billion to 3 trillion times that of the sun and a diameter of about 654.38+ million light years.

Question 4: What is the Milky Way? What's in it? The Milky Way is a wide and irregular band of light, which extends completely around the celestial sphere and complements the scenery of the galaxy (18 photos). It looks like a river. The Milky Way can only be seen on a clear night, which is caused by the light of countless dark stars.

The Milky Way is not the Milky Way, but a part of it. A bright band that can be seen on the earth when projected into the sky.

The Milky Way, which crosses the sky from northeast to south in the starry sky in summer night, is like a rushing torrent, running thousands of miles. How many beautiful daydreams and touching stories have been triggered by the distant Milky Way. In fact, you can see the Milky Way all year round, but at the turn of summer and autumn, you can see the brightest and most spectacular part of the Milky Way. The main constellations that the Milky Way galaxy passes through are Cygnus, Eagle, Fox, Arrow, Ophiuchus, Shield, Sagittarius, Scorpio, Temple of Heaven, Rectangle, Wolf, Southern Triangle, Compass, Fly, Southern Ten, Vela, Tail, Unicorn, Orion and Taurus.

The Milky Way has different shades and widths in the sky. 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, he aimed the telescope at the Milky Way, which was originally composed of dense stars. Why are the stars in this "band" sky the densest? It turns out that 1000 billion stars form a huge lenticular star system, and our solar system is in this system. From the solar system, we can see that the edge of the disk is a banded sky area. This sky area has the densest star projection, and this is the Milky Way we see. This huge star system is also named after the Milky Way, called the Milky Way.

Only when the limit apparent magnitude of the naked eye is above 5.5, or the light pollution index is above 5, can we see the Milky Way. If we can't see the Milky Way with the naked eye, it's hard to see it with the most advanced observation instruments. In the northern hemisphere, the Milky Way is most obvious in summer (in Scorpio and Sagittarius, it extends to the summer triangle and even Cassiopeia), and the Milky Way is very dim in winter (in Orion and Canis major).

I hope I can help you!

Question 5: Is there anything in the Milky Way? A faint luminous band across the starry sky. China was also called Tianhe, Han Yin and Xinghe in ancient times. The Milky Way intersects the celestial equator in Eagle, passes through the constellations of Swan, Toka, Wang Xian, Hou Xian, Yingxian, Yufu, Jinniu, Gemini and Orion in the northern hemisphere, and then passes through the constellations of Big Dog, Stern, Sail, Bottom, Southern Cross, Centaur, Compass, Rectangular ruler, Scorpio, Sagittarius and Shield in the south. The width and brightness of each part of the Milky Way vary greatly. The milky way draws a band with different widths on the celestial sphere, which is called the silver band. Its widest point is 30, and its narrowest point is only 4 ~ 5, with an average of about 20. Some parts of the Milky Way are very bright, such as shields and people. Some parts are very dark, such as Eagle, the big fork south of Cygnus and the "coal bag" near the Southern Cross. The great bifurcation is very dark, and the Milky Way seems to be divided into two tributaries there. As we all know, the Milky Way is actually the projection of the main part of the Milky Way on the celestial sphere. Therefore, through telescope observation, we can see that the Milky Way is composed of a large number of stars and nebulae.

Question 6: What is the Milky Way? What does the zodiac stand for? The Milky Way, also known as Tianhe, Han Yin, Xinghe, Xinghan and Han Yun in ancient China, is a milky bright belt across the starry sky. The Milky Way intersects the celestial equator in Aquila and is located in the northern hemisphere. The milky way draws a band with different widths on the celestial sphere, which is called the galactic band. Its widest place is 30, and its narrowest place is only 4 ~ 5, with an average of about 20, which is only a part of the Milky Way.

The Milky Way occupies a very important position in China culture, and there is a famous legend "Meet at the Queqiao Bridge".

The Milky Way can only be seen on a clear night, which is caused by the light of countless dark stars. The Milky Way is not the Milky Way, but a part of it. The Milky Way consists of about 1000 billion -2000 billion stars with a diameter of 100000 light years.

Rats represent wisdom, cows represent diligence, tigers represent courage, rabbits represent prudence, dragons represent fortitude, snakes represent flexibility, horses represent perseverance and go straight to their goals, sheep represent harmony, monkeys represent flexibility, chickens crow regularly, dogs represent constancy, and pigs represent easygoing.

Question 7: The meaning of the Milky Way is 5 points. The Milky Way is a wide and shining irregular band of light, which extends completely around the celestial sphere. It looks like a river. The Milky Way can only be seen on a clear night. It is caused by the light of countless dark stars (stars).

The Milky Way is not the Milky Way, but a part of it. A bright band that can be seen on the earth when projected into the sky. You can refer to the "Galaxy" entry to distinguish the two.

Question 8: What is the name of the Milky Way? Xinghe and Tianhe

Question 9: What is in the middle of the Milky Way? What is the center of the Milky Way?

At first, people tried to peep into the secrets of the center of the Milky Way with optical telescopes. Although people have the ability to make optical telescopes bigger and bigger and see farther and farther, they still can't see the true face of the center of the Milky Way. Later, I found out the reason, because there is a lot of dust near the silver heart, which can block people's sight like white fog or yellow sand.

In recent decades, the rapid development of infrared astronomy, radio astronomy and X-ray astronomy has provided astronomers with new observation tools and means to explore the mystery of the center of the Milky Way, because infrared, radio waves and X-rays can all pass through the dust barrier. In this way, infrared rays, radio waves and X-rays from the galactic center, like messengers from the galactic center, can bring us some important information about the galactic center.

Through observation, scientists found that infrared radiation, radio emission radiation and X-ray radiation from the center of the Milky Way are much stronger than those from other regions. It is speculated that the center of the Milky Way may not be a simple cluster of stars, and it is difficult to draw a conclusion about what it is. By 197 1, two British astronomers pointed out that the center of the Milky Way should be a "black hole" with a certain mass (in fact, the "black hole" they said should be a black hole. As mentioned above, a black hole is a solid celestial body, but because of its large mass, even light can't escape under the great gravity, and we can't see it, so it is called a black hole. A black hole is a special celestial body with a virtual body. For solid matter, it not only has no mass and gravity, but also has no space. In order to distinguish them, we put the words "black hole" in quotation marks to show that its true and accurate name should be black hole. The following is similar). They predict that if their hypothesis is correct, there should be a strong radio source at the center of the galaxy, and the radiation emitted by this strong radio source should accelerate synchronously. A few years later, people really found such a strong radio source emitting strong synchronous radiation in the center of the Milky Way. It is Sagittarius A, the largest radio source in the galaxy. Some people judge that Sagittarius A is likely to be a massive "black hole", but others think that it can only be regarded as the best candidate for a massive "black hole" for the time being, and it cannot be concluded.

Recently, American astronomers have speculated that there may be two "black holes" in the center of the Milky Way. It is said that there may be a medium-sized "black hole" in the center of the Milky Way, which is thousands of times the mass of the sun. It is dragging some young stars to the huge "black hole" in the center of the Milky Way. It is speculated that its motion mode is around a giant "black hole" with a period of 100 years, and it will be swallowed up by the giant "black hole" sooner or later, thus making the latter bigger. Not long ago, some astronomers said that they also found three giant "black holes" near the earth, located in Virgo and Aries, 5 to 654.38 billion light years away from the earth. Although 1 light-year is equivalent to about 10 trillion kilometers, according to the measurement standards of cosmic objects, this distance is equivalent to neighbors.

Unusually, the mass of these three "black holes" is 50 million to 654.38 billion times that of our sun. These astronomers believe that such a huge mass is rare in a "black hole". There are only about 20 known "Big Macs" of the same kind, and the mass of most other "black holes" is only several times that of the sun.

Scientists have different views on how these "black holes" are formed. Rich Stone, a researcher at the University of Michigan in the United States, believes that these three large "black holes" may be the remnants of quasars, which are aurora materials. In such a large area of Mars, the illumination is equal to 1 trillion suns. He also pointed out that quasars appeared before the formation of most stars in the Milky Way. If it is finally confirmed that the three giant "black holes" come from quasars, they may appear at the peak of quasars' age, that is, about 1 100 million years after the birth of the universe. If so, whether there are galaxies or "black holes" first becomes the next question that astronomers need to study.

NASA announced that they have also detected a medium-sized "black hole" in the universe. This discovery not only fills the "missing link" in the study of the evolution of the "black hole" family, but also helps to deeply understand the basic astronomical problems such as the formation of galaxy structure.

It is reported that the medium-sized "black" detected this time:>

Question 10: What is the Milky Way? The Milky Way was also called Tianhe, Han Yin and Xinghe in ancient China. It is a faint luminous band across the starry sky. The Milky Way intersects the celestial equator of Aquila and is located in the northern hemisphere. The milky way draws a band with different widths on the celestial sphere, which is called the silver band. Its widest point is 30, and its narrowest point is only 4 ~ 5, with an average of about 20. This is just a part of the galaxy. The Milky Way occupies a very important position in China culture, including the famous legend "Meet at the Queqiao Bridge", literary works and televisions with the same name, computers with the brand of "Yinhe" and typhoons called "Yinhe".