What is the beginning of the universe in modern science? What is the end of the universe?

Regarding the problem of the universe, the most popular theory in the physics community is the "universe big" theory, which believes that the universe originated from a singularity about 13.8 billion years ago. This is the most popular view at the moment, and it is accepted by most physicists. And there is also more and more evidence to prove the correctness of the theory of the universe.

Under the theoretical framework of the universe, the beginning of the universe is a singularity, and the expansion of the singularity finally forms the universe we see today. Not only that, but the universe is still expanding, and the reason for the expansion of the universe is dark matter and dark energy. This is the speculation of the theory of cosmic inflation, because without the help of dark matter and dark energy, the universe cannot continue to expand, and it expands at an accelerated rate.

From this, we can see that the expansion of the universe has been continuous since the singularity, just like giving a balloon continuous inflation, there will always be a moment when it will be full, and when it stops inflating, that is, when the balloon is deflated and shrinks, there will always be a moment when the balloon will shrink to one point. In the same way, the universe will collapse one day, after expanding to the extreme, it will collapse, and the final form of collapse is a singularity with infinite density and infinite temperature. In fact, the universe is a cyclical system with a beginning and an end.

Of course, what is said above is just a speculation of the grand theory of the universe, and it is not necessarily correct. Because the theory of the universe is only a widely accepted hypothesis so far, since it is a hypothesis, it is not necessarily completely true, and it is likely to be overturned in a few years, which is possible, after all, every step of science is difficult in the process of development. It requires constant bold assumptions, constant questioning, and constant overturning or revision.

Therefore, what is the end of the universe, physical theory can not give an accurate answer now, but the author has a private opinion, the author believes that since the universe has creation, there must be a day of destruction, because every life in nature is born and destroyed, the seasons have four seasons of reincarnation, the tide has the ebb and flow, the moon has clouds and sunshine, and people have joys and sorrows, birth, old age, sickness and death. Yin and Yang are constantly flowing through each other. Everything in the universe is changing, and the only constant is becoming itself.

Therefore, the universe should be born and died like human beings, but the life span of the universe is much longer than that of human beings.

In modern science, the beginning of the universe is a singularity, and the end of the universe may be a big **, blowing all the physical matter into ruins.

There is no such thing as anyone creating the universe. The origin of the universe is an extremely complex issue. The universe is the material world, which is in constant motion and development.

For thousands of years, scientists have been searching for when and how the universe came to be. To this day, many scientists believe that the universe was formed by a big ** that occurred about 13.7 billion years ago.

The matter and energy in the universe are gathered together, and condensed into a very small volume, the temperature is extremely high, the density is extremely high, and the huge pressure is generated in an instant, and then a large ** occurs, and the reaction principle of the big ** is called quantum physics by physicists. The big ** caused the matter to be scattered, the cosmic space continued to expand, and the temperature also dropped accordingly, and then appeared in all galaxies, stars, planets and even life in the universe one after another.

The universe was not created by anyone, but caused by the big **.

The great cosmology admits that Li Wei is that the universe was formed by a dense and fiery singularity that expanded after a large ** 13.7 billion years ago. In 1927, the Belgian astronomer and cosmologist Lemaître first proposed the cosmic hypothesis.

According to the hypothesis, the American astronomer Hubble proposed Hubble's law that the redshift of galaxies is proportional to the distance between galaxies, and deduced the theory of cosmic expansion in which galaxies are moving away from each other.

One of the most influential theories in modern cosmology. Its main point is that the universe has had a history of evolution from hot to cold. During this period, the cosmic system was constantly expanding, making the density of matter evolve from dense to thin, as if it were a huge scale.

One of the founders of the theory was Gafen Bush Mov.

In 1946, the American physicist Gamow formally put forward the theory of the big **, believing that the universe was formed by a big ** that occurred about 14 billion years ago. At the end of the last century, observations of IA supernovae showed that the universe was expanding at an accelerated rate, as the universe may be mostly composed of dark energy.

Definition of the universe

The physical universe is defined as all space and time and their connotations, including all forms of energy, such as electromagnetic radiation, ordinary matter, dark matter, dark energy, etc., of which ordinary matter includes planets, moons, stars, galaxies, galaxy clusters, and intergalactic matter. The universe also includes physical laws that affect matter and energy, such as conservation laws, classical mechanics, relativity, etc.

In ancient China, both "Yu" and "Zhou" referred to small parts of people's houses, and by extension, the concept of "universe" became larger and larger, with space referring to space and time referring to time, which was a long and complex evolutionary process.

Historically, there have been many ideas about the universe and its origins. The ancient Greeks and Indians were the first to come up with a theory of the universe dominated by the laws of physics rather than individual opinions. Ancient Chinese philosophy contains the concept of the universe, with the universe being all space and the universe being all time.

The above content refers to Encyclopedia - Universe.