What is the outside of the universe like?

Since exploring the universe, human beings have been thinking about a question: Is our universe unique? In ancient times, human beings were backward in science and technology, and thought that the earth was unique. The sun, moon and stars in the sky all belonged to the earth. However, with the progress of human civilization and science and technology, we know that the earth is just a trivial dust in the universe, and there are countless planets like the earth in the universe.

So with the broadening of human vision, we know more and more about the universe. In the past, we may think that the universe is unique, and the universe we live in is infinite and unique. However, scientists found through research that the universe may not be unique, so the parallel universe and the multiverse were put forward.

if the universe is not unique, what is it like outside the universe? First of all, let's talk about why the universe may not be unique. We know that modern science believes that the universe originated from the Big Bang. After the Big Bang, the universe expanded outward at superluminal speed, gradually forming our present universe. Have you ever thought about how this singularity came about before the universe was formed? What space is this singularity in?

In addition, the universe is still expanding at superluminal speed, so why can the universe expand? We compare the universe to a balloon. If a balloon wants to keep expanding, the premise is that the space it is in is large enough. If the balloon is enclosed in a fixed space, it can't expand indefinitely. Going back to the expansion of the universe is the same way. The universe has exploded for 13.7 billion years now, and it is still expanding outward at superluminal speed. Can there be no space outside the universe? And the space outside the universe is too big for us to imagine.

It is not unreasonable for scientists to put forward the concept of multiverse. Scientists believe that the universe is not unique, but there are countless universes in the huge space outside the universe. They are also big and small, just like the planets of a galaxy, and their formation time is different. Some may be very old, some are still young, some are being destroyed, and some are being reborn.

We can call the space outside the universe the big universe, while our universe is called the small universe. There are countless small universes in the big universe, and there are countless galaxies in each small universe. Different intelligent civilizations will be born in each universe. Like human beings, these civilizations are born and destroyed, and some civilizations can continue to develop by their own efforts, and finally understand the ultimate mystery of the universe and have the ability to leave the small universe. When a civilization develops to the top of the pyramid of this universe, they will also know the truth of the universe and understand that the universe they live in is just a small universe, thus having the idea and strength to leave the small universe.

All civilizations that can leave the small universe and reach the big universe must be powerful civilizations, but there is no upper limit for the development of civilizations. No one knows to what extent a civilization is the limit, so the strength gap between civilizations will be very large, which is mainly related to the different ages of the universe. Some universes are very old and may form tens of billions of years earlier than yours, so the strength of the top civilization in this ancient universe may be hundreds of millions of years ahead of yours, and the civilization gap of hundreds of millions of years is unimaginable.

someone may ask, so how do you leave your own small universe? Scientists are also looking for an answer to this question. Some scientists ask whether the black hole in the universe is the relevant channel. As we all know, there is a very special celestial body in the universe, that is, a black hole. The black hole has a very strong swallowing ability, even stars can swallow it, and light and electromagnetic waves can't escape the swallowing of the black hole. No one knows where the substances swallowed by the black hole have gone, whether they have disappeared or gone to another space.

Through the continuous study of black holes, scientists believe that the substances trapped by black holes do not disappear, but erupt through the white hole at the other end of the black hole. It is uncertain whether the white hole is in a cosmic space with the black hole. If it is not in a space, it is very likely that it is connected to another universe.

If this hypothesis holds, the black hole is indeed a connecting channel between universes, then it is possible for human beings to leave this universe in the future. However, it is not easy to cross the black hole. We know too little about the black hole now, and we believe that the shuttle space in the black hole is terrible. It does not mean that we can just get a spaceship, but we may need a civilization to develop to an advanced civilization. With relevant technology, we can only succeed if we know enough about the black hole.

For the outer space of the universe, there is no definite evidence to prove the concepts of parallel universe and multiverse put forward by scientists, but many scientists believe that this may be true. Science first comes from fantasy and conjecture. The reason why human science and technology develop so fast is indispensable to the rich imagination of human beings. Einstein, a famous physicist, had many conjectures about the future during his lifetime. Although there was no way to prove them at that time, they were all proved to be correct by later generations.

Although we can't prove the existence of multiverse with enough evidence now, this conjecture is believed to be confirmed by human beings in the future, and with the rapid development of human science and technology, it is believed that one day it will become an advanced civilization standing at the top of the cosmic pyramid to solve the truth of the universe.