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Around the sun, there are nine planets of different sizes, such as Earth, Venus, Mars, and Jupiter, which are constantly orbiting, which is the solar system. So what kind of world is it outside the solar system? It was a galaxy with about 200 million sun-like stars.
The Milky Way is like a discus, with a diameter of 100,000 light-years and a central part of 15,000 light-years thick. If you fly out of the galaxy, where will it go? There, there are countless galactic worlds called nebulae.
Adjacent to the Milky Way is the Andromeda meteor group. This meteor group is about the same size and shape as the Milky Way, and is home to about 200 billion stars.
In 1929, Harvre in the United States discovered that all nebulae were leaving us. For example, the Hair Nebula, which is about 100 million light-years away, is traveling at 6,700 kilometers per second, the constellation Leo is traveling at 19,500 kilometers per second, and the Altair Nebula, which is 100 million light-years away, is moving away from us at an astonishing speed of 39,400 kilometers per second.
If this continues, the nebula will reach a speed of 300,000 kilometers per second at 10 billion light-years, which is equal to the speed of light. In this way, the light of all the stars will never shine on our earth. Therefore, a place of 10 billion light-years would be the end of the universe as far as we can see.
There are nebulae in the distance, but we can't observe them because the light can't reach them. Of course, this is a family statement, and there are other interpretations. Some people believe that the universe is balloon-shaped, that it is constantly expanding like a balloon, and some of these nebulae are approaching us.
Others have proposed that the universe is saddle-shaped, and like a saddle, it is constantly expanding towards the four edges of the saddle. According to this interpretation, in the distant future, the stars will gradually move away and the night sky will become monotonous and lonely. However, there are those who disagree with this, arguing that the universe is eternal.
Although it will expand indefinitely, new planets will be created in the expanded space, and no matter how the universe expands, new star families will be added. Therefore, the universe will not be desolate. Whether the end of the universe is at the end of the universe, human beings can only speculate at present.
Human technology is limited, and the time of life is also limited, and I personally believe that the universe is infinite for individuals at this stage.
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The universe is bounded and boundless, but the technology that human beings have mastered to explore the universe is far from enough, and we must continue to explore the universe.
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There is an end to the universe, but the current science cannot detect it
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Like two opposing mirrors, you can never know the depth of field reflected by each other.
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The universe is bounded and boundless, and now we can only think so, hehe.
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If the great ** theory is true, the universe is constantly extended, then, there are edges, but very far away.
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In fact, I don't know if there are any scientists, and now I think that there is none, after all, human technology cannot be given yet.
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Summary. Hello, the following information ** on the Internet, here to help you query: At present, human beings' understanding of whether there is an end to the universe is still relatively limited, and the scientific community also has different views on this issue.
According to current observational data and theoretical research, the universe is infinite or finite but extremely large, so there may not be a real end. The currently widely accepted theory of the evolution of the universe is the Great Theory, which holds that the universe began at a very hot point, diffusion and cooling, and eventually formed the universe as we see it today. The big ** theory suggests that the universe has a beginning in time, but may be infinite in space.
On the other hand, some physicists believe that the universe may be spatially finite, but its scale is already far beyond what we can observe.
Hello, the following information ** in Hu Shi Ruler Network, here to help you query: At present, human beings' understanding of whether there is an end to the universe is still relatively limited, and the scientific community also has different views on this issue. According to current observational data and theoretical research, the universe is infinite or finite but extremely large, so there may not be a real end.
The currently widely accepted theory of the evolution of the universe is the Great Theory, which holds that the universe began at a very hot point, diffusion and cooling, and eventually formed the universe as we see it today. The big trouser height** theory suggests that the universe has a beginning in time, but it may be infinite in space. On the other hand, some physicists believe that the universe may be spatially finite, but its scale is already far beyond what we can observe.
There are also some hypotheses about the "boundaries" of the universe, such as "great inhalation" and "great contraction", but these hypotheses currently lack sufficient evidence to confirm or falsify. Therefore, there is no clear answer to the question of whether the universe has a good fortune, and more observations and theoretical studies are needed to reveal the mysteries of the universe.
There must be at the end. It's just that the current technology can't detect it, and it can't guess what the end will be. It's as if the ancients couldn't know what the edges of the earth were. >>>More
Einstein's explanation for this question is that the universe is bounded and infinite, while Hawking believes that the universe is finite and unbounded, and I personally believe in Hawking's view of the end of the universe. In addition, as for what is beyond the end of the universe, I think this is unknowable, no one can know what is beyond the end, and we don't even know where the end is, how can we know what is beyond the end. >>>More
Boundless, but with a detectable limit, the horizon, beyond which we are agnostic (the horizon is the universe at the moment).
Time and space are intertwined. Before the universe was large, the universe was a "pure energy point" with almost infinite density, infinite energy, infinite temperature, and infinite gravitational pull. But the universe is big ** makes these pure energies burst out suddenly, and it is at that moment that time has meaning. >>>More
In the 18 billion planetary systems of the Milky Way, if 1 percent of the galaxies have the possibility of life, then the probability is 100 million, if there is 1 percent of the creatures in these 100 million planetary systems, then the probability is 1.8 million, and if 1 percent of the 1.8 million planetary systems are intelligent creatures, then the probability is 10,000. If you count all the galaxies out there, the probability is scary. Therefore, the idea that "there is life only on Earth in the universe" is naïve and ridiculous. >>>More