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The Milky Way is a sizable spiral galaxy with three main components: a galactic disk containing spiral arms, a protruding galactic center, and a halo section.
The spiral galaxy M83, which is similar in size and shape to our own Milky Way.
Silver disk: The silver disk is the main body of the galaxy, about 80,000 light years in diameter, the thickness of the middle part is about 6,000 light years, the thickness of the silver disk near the sun is about 3,000 light years, the silver disk is mainly surrounded by four huge spiral arms, it is composed of countless blue stars, the sun is located on the Orion arm between the Sagittarius arm and the Perseus arm, 28,000 light years or a thousand parsecs away from the galactic center. The formation of spiral arms is related to the activity of galactic nuclei during the creation of the Milky Way.
Silver Center: The central protrusion of the galaxy is a very bright spherical shape, about 20,000 light-years in diameter and 10,000 light-years thick, this region is composed of high-density stars, mainly red stars that are about 10 billion years old, and there is a lot of evidence that there is a huge black hole in the central region, and the activity of the galaxy's nucleus is very intense.
Galactic halo: The galactic halo is dispersed in a spherical area around the galactic disk, the diameter of the galactic halo is about 98,000 light years, the density of stars here is very low, and there are some globular clusters composed of old stars, some people believe that there is a huge spherical radio radiation region outside the galactic halo, called the silver crown, which extends at least 100 parsecs or 320,000 light years away from the galactic center.
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Silver Disc Milky Way Nucleus Silver Halo.
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Galaxy. It is composed of stars, planets, moons, comets, meteors.
gas, dust, and interstellar matter. The Milky Way Galaxy (foreign name: milky waygalaxy, alias: Yinhan, Tianhe) is the solar system.
The bar-spinning star system in which it is located. The galaxy includes 1500 400 billion stars and a large number of star clusters, nebulae, as well as various types of interstellar gas, interstellar dust and black holes. Its total visible mass is 210 billion times the mass of the Sun and its diameter ranges from 100,000 to 180,000 light years.
The Milky Way is an oblate sphere with a huge disk structure, consisting of a bright and dense core, two main spiral arms, and two unformed spiral arms, so that when viewed from Earth, the Milky Way appears as a silvery-white ring around the sky.
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The Milky Way is made up of stars, planets, moons, comets, meteors, gas, dust, and interstellar matter.
If you are asking about the structure of the Milky Way, then the Milky Way is a silver heart, a silver core, a silver disk, a silver halo, and a silver crown from the inside out.
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The Milky Way is the galaxy in which the solar system is located, with 1000 to 400 billion stars and a large number of pre-cluster clusters, nebulae, and various types of interstellar gas and interstellar dust. The Milky Way itself is about 120,000 light-years in diameter (not taking into account the silver crown and peripheral material) and about 12,000 light-years thick at the center. The total mass of the Milky Way is 210 billion times that of the Sun.
The Milky Way is a barred spiral galaxy with a massive disk structure consisting of a bright dense nuclear sphere, two major spiral arms, and two unformed spiral arms, which are 4,500 light-years apart. The Sun is located on the Orion Arm, an arm of the Milky Way, at a distance of about 26,000 light-years from the center of the Milky Way.
The Milky Way's ** is a supermassive black hole (Sagittarius A), which is composed of a galactic core, a galactic core, a galactic disk, a galactic halo, and a galactic crown from the inside out. Most of the Milky Way** regions are old stars (mainly white dwarfs), and the outer regions are mostly nascent and young stars. There are more than a dozen satellite galaxies scattered over an area of hundreds of thousands of light-years, the larger of which are the Large Magellanic Cloud and the Small Magellanic Cloud.
The Milky Way grows by devouring the surrounding dwarf galaxies, albeit quite long.
The Milky Way is a member of the local group of galaxies, the nearest galaxy being the Andromeda Galaxy (M31).
The projection of the Milky Way in the sky is like a glittering river flowing in the sky, so it was called the Milky Way or Tianhe in ancient times, and the Milky Way can be seen all year round, but the brightest and most spectacular part of the Milky Way is seen at the turn of summer and autumn.
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The Milky Way is made up of stars, planets, gas, dust, etc.
The Milky Way is a massive system of celestial bodies, with stars at the core of the galaxy that cluster together near the galactic center. Planets and dust, on the other hand, are distributed in the interstellar space around the stars. Gases are mainly hydrogen and helium, which are the main components that make up stars and nebulae.
The composition of the Milky Way is very complex, and there are still many unknowns for humanity.
Different components within the Milky Way also have different characteristics and roles. Planets are celestial bodies orbiting stars, and their trajectories and characteristics can reveal their ** and evolutionary history. Gas and dust are the raw materials that make up stars and planets, and they participate in the interstellar cycle and material exchange of the Milky Way.
The composition of the Milky Way galaxy is very important for human exploration and understanding of the universe. By observing the various components of the Milky Way, it is possible to understand the history of the formation and evolution of the universe, and further explore the matter and energy in the universe. The composition of the Milky Way is also one of the important clues in the search for life in the universe, because the earth of humans is located within the Milky Way.
Dark matter properties in the Milky Way:
1. High objects do not emit or absorb light.
Dark matter is a substance that does not interact with electromagnetic waves, so it does not emit or absorb light. This is also the reason why we cannot directly observe the matter of Dark State Nianwang.
2. It has an effect on gravity.
While dark matter does not interact with electromagnetic waves, it does interact through gravity like other matter. Since dark matter occupies most of the matter in the universe, its gravitational effect has an important impact on the evolution of the entire cosmic system.
3. Widely distributed.
Dark matter is very widely distributed in the universe and exists in almost the entire universe. Dark matter is distributed differently from ordinary matter, and it is mainly distributed around galaxies and galaxy clusters, forming the so-called "dark matter halo". Due to its wide distribution, the total mass of dark matter far exceeds the mass of visible matter.
Give so many points, I'll also join in the fun. The landlord's question is of little practical significance, referring to the upstairs Du Kang and nostalgia. Bigger than China is the world, bigger than the world is the Earth-Moon system, larger than the Earth-Moon System is the Solar System, larger than the Solar System is the Milky Way, larger than the Milky Way is the total galaxy, and there is no definition of a universe larger than the total galaxy.
The Milky Way and nearly 40 other galaxies that are not very far apart form a cluster of galaxies, all of which have a more or less mutual gravitational pull. Of these, the Milky Way and the Andromeda Galaxy are the two largest and closest galaxies, and the distance between them is only 2.5 million light-years Reference.
The galactic center is the intersection of the Milky Way's axis of rotation and the galactic plane, the center of the galactic core, and the center of the Milky Way. The Silver Heart is located in the direction of Sagittarius. This region is mainly made up of a large number of stars. >>>More
The total mass of the Milky Way is about 100 billion solar masses, and if the average mass of stars is similar to that of the Sun, there are about 100 billion stars in the Milky Way. In fact, the number of dwarf stars with masses smaller than the Sun in the Milky Way far exceeds those with masses greater than the Sun, so the total number of stars in the Milky Way is estimated to be about 1500-200 billion. >>>More
Constellations refer to a group of stars in the sky projected on the celestial sphere at similar positions, which do not belong to the Milky Way, so there are several galaxies in the Milky Way that are misstated, and the International Astronomical Union accurately divides the whole day into 88 constellations. >>>More