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Looked at everyone's! I can't even laugh if I want to! Do you want to know the real answer?
I can tell you responsibly! With the current level of science and technology, all our answers are to comfort ourselves with the small and incomplete achievements we have made! It is precisely the big ** theory that can comfort more hearts!
Universe! What is the universe? The universe is in**?
Is the universe energy? Can the universe be infinite? Questions posed by Chinese philosophers 3,000 years ago"A foot in the woods.
Half of the days are gone, and the children and grandchildren will not be able to live forever? "The question of whether matter is infinitely divisible or not has not been figured out! Can't figure it out!
So how much scientific significance does the model of the universe we speculate have!??Just from the point of view of encouraging science! People are optimistically writing all kinds of books, and many people are talking about them optimistically when they see them!
Face the Universe! The more sophisticated your thoughts! The clearer the mind! The more you fear.
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1: At present, most people agree on the big ** theory, that is, the universe originated from a "primordial fireball" tens of billions of years ago.
2: The matter in the universe attracts each other through gravitational action, gradually condenses together, and deposits to the same center, when the pile of material reaches the mass of the sun and the central temperature reaches 7 million degrees, it will produce a reaction of hydrogen fusion into helium, and a new star is born.
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The universe was created as a result of the emergence of energy! The planets are brought together due to the mutual gravitational pull of the primordial gases.
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The universe is created by the karmic empathy of all beings!
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It is said that the universe was formed by the deposition of mass chemicals in a single time** and a large amount of energy.
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The universe is vast and infinite, boundless, beginningless, and endless. At present, the universe as human cognition is limited to the theory of the formation of the "universe **". The center of the big ** is the "black hole", after the big ** the universe begins to expand around, after the end of the universe expansion, the black hole begins to shrink, and absorbs all the stars in the universe, matter, including light, in the center of the universe to gather and squeeze.
Eventually, a new "big **" occurs, giving rise to the new and the universe. And in this way it will loop forever and infinitely.
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It is true that there are many extragalactic galaxies in the universe like the Milky Way.
1. Introduction to the Milky Way:
1. The milky way (English: the milky way, also known as Yinhan, Tianhe, Milky Way, galaxy, Tianhan, etc.), is the barred spiral galaxy where the solar system is located, including 1000 400 billion stars and a large number of star clusters, nebulae and various types of interstellar gas and interstellar dust.
2. The total mass is about 210 billion times that of the Sun, and it belongs to the local group of galaxies, and the nearest extragalactic galaxy is the Canis Major dwarf galaxy, which is 42,000 light-years away from the Milky Way.
3. The Milky Way is an oblate spherical with a huge disk structure, consisting of a bright and dense core, two major spiral arms, and two unformed spiral arms, which are 4,500 light-years apart. The Sun is located on the Orion Arm, a branch of the Milky Way, and the distance from the center of the Milky Way is about 10,000 light-years.
4. The ** of the Milky Way is a supermassive black hole, which is composed of a silver core, a silver core, a silver disk, a silver halo and a silver crown from the inside to the outside. 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.
2. Introduction to extragalactic galaxies:
1. Extragalactic galaxy refers to a galaxy composed of a large number of stars outside the Milky Way. Because of the distance, it appears as a vague point of light on the surface, so it is also called the "extragalactic nebula". Extragalactic galaxies, like the Milky Way, are made up of a large number of stars, star clusters, nebulae, and interstellar matter.
2. Distribution of galaxies: The overall distribution of galaxies in cosmic space is the same in all directions, connecting triple galaxies. Together with the Andromeda Mega Galaxy, etc., it forms this group of galaxies.
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Three: 1Used as a method of comparison, it is shown that the density of small stars is particularly high2Use an analogy to illustrate the size of the small universe.
3.It is used as a method of comparison to illustrate the size of the galaxy.
Four: 1It seems that the way to express feelings is the result of feelings, but it is actually the truth, so it is not repeated.
2.A celestial river is a part of the Milky Way seen from a point on the Earth, a discus is seen from an angle beyond the Milky Way, and a ring is seen from the Earth.
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1.Not contradictory. Because some stars in the universe are much hotter than that.
2."10 million" is easier to understand than "100 billion", how big can this number be.
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Yes, humans are very concerned about the presence of liquid water when exploring the moons of other planets in the solar system and other planets. Because without water, there can be no life. Humans are very curious to know if there is life on other planets in the universe except for the Earth. If life is discovered, human beings will not be alone in the universe. Unfortunately, no signs of life have been found on other planets so far.
It is known that the moons of Jupiter and Saturn have liquid water. However, due to the limitation of science and technology, there is no more in-depth exploration for the time being.
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Definitely. It is not nonsense that water is the source of life, and the first cells on the primitive earth were born in water. So it follows that carbon-based organisms need water to emerge. If there is no water, then the most likely thing that will produce is actually silicon-based life.
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The Andromeda Galaxy is moving closer to the Milky Way, and will collide with the Milky Way in the next few billion years and eventually merge together. The spiral galaxy in the constellation Virgo M90 is also approaching the Milky Way and may collide with the Milky Way.
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None of the galaxies are close to Earth, but every galaxy is moving away from Earth.
Because the universe is expanding at an accelerated pace, the distance between any two galaxies is getting farther and farther apart. Far enough away, the expansion rate is already faster than the speed of light, which is why there are galaxies that we will never see.
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By observing the light emitted by M90, scientists concluded that the galaxy was getting closer to us. The M90 galaxy is part of the Virgo Cluster, which is made up of more than 1,200 galaxies.
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No, the expansion of the universe will make galaxies farther and farther apart, and they will not be close together.
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People are BAI
The reason for the many problems of the universe is often its essence.
zhi is not a question about the objective world itself, but an ambiguity in the definition of the concept of the word "universe". Human beings' knowledge and understanding of the universe is actually divided into three levels, the smallest range is the scope of human senses, the universe that people can understand through their senses; The middle level is the scope of human thinking, the range that people reach through imagination, human imagination is infinitely random, what you think and how you think has nothing to do with the objective world itself, and it is beyond the scope of the senses and cannot be confirmed, so it can only exist as an ideology; The largest scope is the sum of the objective world, that is, the scope that people really want to express in defining the word "universe", but in fact, people's knowledge and understanding of the "universe" is actually the sum of sensory knowledge, that is, the minimum level of human senses, and this difference in understanding has led to various questions about the "universe". For example:
What is beyond the universe? If the "universe" at this time represents the sum of the worlds, then there will be no "universe" outside of it; If the "universe" at this time indicates the scope of human sensory cognition, then beyond the "universe" is unknown to man, and it is meaningless for the unknown to ask "what is". There is also a saying that "universe" means the sum of time and space, "time" and "space" are two concepts abstractly summarized when people understand the universe, if we have to define it this way, then "universe" can only mean the sum of time and space, not anything else, and it has no meaning.
In fact, it is a matter of "units".
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