Pursue all unknown phenomena and hypothesize unknown theories. This is the driving force for scientific experiments and exploration, and it is also the driving force for mankind to keep moving forward. There are many supernatural forces in the world. Human beings are afraid of this force. However, human beings have not given up completely. Instead, they have made use of existing theories to find unknown phenomena, discover laws, explore nature, and ensure that human civilization can stand on the earth and reproduce smoothly.
After hundreds of years of human development, the earth has gradually become the back garden of mankind, and there are fewer and fewer unknown areas. Human beings who have entered modern civilization can proudly say that we have "conquered" the earth. However, now humans have a new goal, which is the mysterious universe. The universe is so big, how can it be measured?
In the past, people thought that the earth was the center of the universe and that the sun revolved around the earth. However, the development of scientific and technological civilization broke people's ignorant illusions. It turns out that the earth is just an insignificant planet in the universe, a tiny dust. We have also gradually realized our own weakness. In the face of such a huge cosmic system, human beings are not the only ones. They are just the product of the accidental and inevitable addition of the rules of the universe.
We are very curious, what kind of matter is behind the universe, and what phenomena exist? Through various assumptions, calculations, and simulations, scientists have proposed the Big Bang theory. They believe that the birth of the universe originated from a big bang. After the big bang, various materials in the universe appeared. Moreover, the universe is still constantly moving and expanding, its diameter is constantly increasing, and objects are moving away from and repelling each other. If time is stretched infinitely, the universe may be an infinite space.
So how big is the universe? Can it really grow infinitely? Scientists conducted a study to determine the size and ductility of the universe by measuring its curvature. But the results were unexpected. Normally, there must be curvature in a space with a range, but the curvature of the universe is infinitely close to 0, which means that the universe is very close to a flat space. If we regard the universe as a flat space, we will get an interesting conjecture - parallel space .
In many film and television works, we can often hear the concept of "parallel space", but most of them regard it as artistic creation and not real existence. However, theoretically speaking, this is not completely fictional, but is still a concept that really exists in physics. However, the concept of parallel space has not yet been verified. Why did
propose the concept of parallel space? In fact, this is closely related to the expansion of the universe. In the initial stage of the universe, that is, when it is still at the singularity , although there is no matter in it, there is a large amount of energy. At this time, it is in a state of false vacuum. When the universe is born and begins to expand infinitely, a true vacuum state will appear, which is the parallel universe .
Scientists believe that the parallel universe can be said to be a mirror, reflecting everything in our universe, connected and independent of each other. There are also living creatures in parallel universes that can also reproduce and develop. More importantly, scientist Lee Smolin also believes that the universe is a living substance and can give birth to small universes on its own and gradually evolve.
Generally speaking, in real life, we have not been able to confirm the existence of parallel universes, but we can often hear some claims about parallel universes, such as the "Nantianmen" incident that appeared over Hebei in 2015. Many people thought that it was a parallel universe. In fact, it was actually a natural phenomenon - a mirage .
We have to admit that there are still some phenomena that we cannot explain, whether on the earth or in the universe. We can put forward many hypotheses and theories. As long as they can be reasonably explained, these theories can exist without sufficient evidence. Although human beings are small, they can still rely on their own wisdom to explore the mysterious universe. One day, everything will have answers.
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