What is the outside of the universe like?

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

Then, 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 the only universe. However, scientists found through research that the universe may not be unique, so they put forward parallel universe and multiverse.

If the universe is not unique, what is it like outside the universe? First of all, 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. Before the formation of the universe, have you ever thought about how this singularity came about? 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 the 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. The same is true for the expansion of the universe. Up to now, the universe has exploded for 65.438+037 billion years, 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 like planets in a galaxy, big and small, and formed at different times. Some may be very old, some are young, some are being destroyed, and some are being reborn.

We can call the space outside the universe a big universe, and a universe like ours a small universe. There are countless small universes in the big universe, and there are countless galaxies in each small universe. Different intelligent civilizations will also be born in each universe. Like human beings, these civilizations are born and destroyed. 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 their universe is only a small universe, thus having the idea and power to leave the small universe.

A civilization that can leave the small universe and reach the big universe must be a powerful civilization, but there is no upper limit to the development of civilization. No one knows to what extent a civilization is limited, so the strength gap between civilizations will be great, which is mainly related to the age of the universe. Some universes are very old and may have been formed tens of billions of years earlier than yours. Then the strength of the top civilization in this ancient universe may be hundreds of millions of years ahead of you, and the civilization gap of hundreds of millions of years is unimaginable.

Some people may ask, then how do you leave your own small universe? Scientists are also looking for the answer to this question. Some scientists have asked whether black holes in the universe are related channels. As we all know, there is a very special celestial body in the universe, which is a black hole. Black holes are so powerful that even stars can swallow them, and light and electromagnetic waves can't escape the swallowing of black holes. No one knows where the matter swallowed by the black hole went, whether it disappeared or went to another space.

Through the continuous study of black holes, scientists believe that the matter trapped by black holes does not disappear, but erupts through the white hole at the other end of the black hole. Whether the white hole is in the same space as the black hole is still uncertain. If you are not in one space, you are probably connected to another universe.