Review
In ancient times, due to people's knowledge reserves are less, scientific development is backward, the understanding of the environment is limited to an acre and a half of the land under the feet, for the vast universe can only be viewed from a distance and can not explore the mysteries, but for the unknown and mysterious far away, the ancients will also have some illusions, but most of them are described by demons and ghosts, deep in the quagmire of idealism.
Perennial feudal oppression and religious indoctrination have made intellectuals in some Western countries rise up and swear to die to destroy this ignorant and decadent ideology, and it is precisely their rebellion that has allowed advanced scientific ideas to truly integrate into people's lives.
With the continuous progress of science and technology, people's research on unknown fields such as the universe has become more and more in-depth, from the earliest geocentric theory to the later heliocentric theory to the Milky Way, and then discovering the endless universe.
It was probably not until the appearance of the Hooke Telescope in 1919 that people really realized that there was a wider space beyond the Milky Way, where there was no boundary, a darkness.
The birth of the universe
In fact, as early as the beginning of the discovery of the universe, people began to think about whether this mysterious universe had boundaries. In order to find this answer, people began to study the origin of the universe, and the most recognized theory was the Big Bang theory.
The theory holds that the universe began as a singularity approaching infinity, and later because of the explosion all the material energy and space-time concepts that are now born, and after a long evolution of 13.7 billion years, the cosmic space that is now spread across the major stars was formed.
And the researchers also found that the cosmic explosion is not the end but another, and the universe is still in the process of expanding and expanding.
In the 1929 observation of the universe, it was found that different galaxies also repulsed from each other due to the effects of expansion. This expansion is far faster than the speed of light, and the universe that people can observe can only use light and waves close to the speed of light, so with the current level of human technology, it is impossible to break through the constraint of the speed of light.
If we can't study faster-than-light speeds in the future, then our research will also be limited.
There are borders and no boundaries
For the understanding of the boundary of the universe, Einstein once proposed the theory that the universe has edges and no boundaries.
The universe we are in is equivalent to a multidimensional world, and we humans and the earth we are in are a three-dimensional realm, and the higher dimensional realm is impossible for us to explore, so in our eyes the universe may have a boundary, but in the eyes of higher dimensional creatures, the universe is a broader space, which may be boundless, or it may have a boundary in a very far place.
In fact, in the academic community, the Möbius ring has been regarded as a multi-dimensional object, the structure of the Möbius ring is very simple, it is equivalent to a long strip of paper rotated 180 ° after the surrounding contact, and we usually see the paper is different, this ring has no front and back.
In an experiment in which he placed an ant on a Mobius ring, he found that even without moving the paper, the ant could walk anywhere on the paper. Even without ants, with only a simple brush, you can draw a complete line on this magical paper ring without interruption.
Not only the Möbius ring, in the course of the study, scientists found that the Klein bottle is also a high-latitude object, the Klein bottle as a whole is connected by a smooth surface, there is no intersection, is a typical four-dimensional structure, which is why people will say that the real Klein bottle is not satisfied even if all the water sources on the earth are put in.
In fact, through these two examples, we can find that both the Möbius ring and the Klein bottle are unchanged in the three-dimensional and four-dimensional universes, and the only difference lies in the limitation of dimensions.
And human beings as three-dimensional creatures cannot imagine the true appearance of four-dimensional space even if they exhaust their lives. In the same way, it is quite possible that the universe in our eyes is only the universe seen in three dimensions, not its true and complete appearance.
What exactly does the infinitely enlarged universe look like?
Although our current understanding of the universe is only one in ten thousand, with the speed of human technology, I believe that it will not be long before we can explore the true picture of the universe, after all, it has only been about a hundred years since the discovery of astronomical telescopes. There are even scientists who fantasize that if human beings cannot explore the real universe by scientific means, then what will it look like if the universe that can be observed at present is infinitely enlarged?
According to the appearance of the universe returned by the relevant detection equipment a billion light-years away, we see that in more distant galaxies, the entire universe is in a state of darkness, and only sporadic rays of light are scattered throughout it, and these lights are various galaxies. And the more distant the universe, the more empty it appears, and the number of galaxies is rarer.
epilogue
If the infinitely enlarged universe is pitch black, then if we start shrinking from a billion light years until a thousand light years later, we can find that the originally dark and empty universe is densely lined with white dots of light.
And the most shocking thing is that when the cells of the human body are infinitely enlarged to the size of electrons, we will find a picture of the same situation, the fine electrons are densely arranged around the protons, just like countless galaxies surrounding the same center, and its arrangement and picture are exactly the same as the universe.
This also causes human beings to ponder, if the farthest distance of the universe is exactly the same as the proton in our body, then can this universe also be a proton in some high-dimensional organism? And we humans are some of the smaller creatures in this proton, and perhaps for humans, this question will never have an answer.