How the universe was born, how the universe was born

According to Stephen Hawking et al., the universe originated with the singularity**. Billions of years ago, the singularity temperature continued to rise and reached a critical temperature, and so it happened. This theory is based on the ray radiation (blueshift or redshift, etc.) of the stars of the universe.

After the big **, the temperature gradually drops, the matter continues to form and spread outward, and the dust and other things that appear combine due to rotation or other reasons to gradually form stars, which have developed into what they are today after billions of dollars. But the universe is still expanding, and its future is unknown. The focus of the theory is also on whether the so-called singularity exists, is it another universe outside the present universe?

Nothing is known. It may take a long time to reveal. Satisfied.

When we look up at the starry sky, we will see countless stars, these dense stars, representing countless different clocks, each of their planets has a different time than ours, these stars have witnessed the passage of billions, even tens of billions of years, compared to the life of the universe is much longer, 13.7 billion years.

When we look up at the starry sky, we will see countless stars, these dense stars, representing countless different clocks, each of their planets has a different time than ours, these stars have witnessed the passage of billions, even tens of billions of years, compared to the life of the universe is much longer, 13.7 billion years.

"The Big Bang Theory" holds that the universe was formed by a dense and hot singularity that expanded after a big ** 13.7 billion years ago. [1] In 1927, the Belgian astronomer and cosmologist Georges Lema?

0?6tre) was the first to put forward the cosmic hypothesis. In 1929, 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 that 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 Gamow. 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.

2]** In the beginning, matter could only exist in the form of elementary particles such as neutrons, protons, electrons, photons, and neutrinos. The continuous expansion of the universe after that caused the temperature and density to drop very quickly. As the temperature decreases and cools, atoms, nuclei, and molecules are gradually formed, and they are compounded into the usual gas.

The gas gradually coalesced into nebulae, which further formed a variety of stars and galaxies that eventually formed the universe we see today.

The idea that the universe does not exist forever, but is created from nothing" can be said to be deeply ingrained in Western culture. Although Greek philosophers considered the possibility of an eternal universe, all major Western religions have always insisted that the universe was created by God at a particular moment in the past.

How did the solar system come into being?

When we look up at the starry sky, we will see countless stars, these dense stars, representing countless different clocks, each of their planets has a different time than ours, these stars have witnessed the passage of billions, even tens of billions of years, compared to the life of the universe is much longer, 13.7 billion years.

The universe has no origin. It is only the galaxies in the universe that have origins. The universe is large and should be understood as the universe is partially large.

Any object that "lasts for an end, occupies a bounded space, and has a quantity of things" is only a part of the universe. Every part of the universe has a question of origin, but not the universe as a whole! That is to say:

The universe as a whole is infinite, and its parts are finite; The universe is born and dies, and the universe itself is not always there.

The scientific community generally believes that the universe was formed 13.7 billion years ago.

The universe was formed by a great ** 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.

Research experience. What is the nature of space and time? This is a question that has been pondered by ancient philosophers and modern astronomers more than 2,000 years ago. After Copernicus, Herschel, and Hubble's trilogy of exploring the universe from the solar system, the Milky Way, and extragalactic galaxies, cosmology is no longer a profound and esoteric abstract philosophical speculation, but a modern science based on astronomical observations and physical experiments.

It wasn't until the 20th century that two "models of the universe" emerged that were more influential. One is the steady-state theory, and the other is the big ** theory. In the late 20s of the 20th century, Edwin Hubble discovered the phenomenon of redshift, indicating that the universe is expanding.

In the mid-60s of the 20th century, Arnault Penzias and Robert Wilson discovered "cosmic microwave background radiation". These two discoveries give strong support to the big ** theory.

Membrane cosmology. The standard grand model of the universe shows that the universe erupts from a singularity of infinite density. But it is not understood what triggered the outbreak: the known laws of physics do not apply.

At the same time, it is difficult for scientists to explain why the universe left behind by such a drastic large ** has an almost completely uniform temperature, because there does not seem to have been enough time to reach temperature equilibrium since the birth of the universe.

For most cosmologists, the most plausible explanation for the coherence is that shortly after the formation of the universe, some unknown form of energy caused the young universe to expand at a speed faster than light. In this model, the three-dimensional universe is a membrane that floats above a "volume universe" with four spatial dimensions.

If the universe contains its own four-dimensional stars, then some of those stars will collapse and eventually form four-dimensional black holes. These four-dimensional stars explode like supernovae, while their inner layers collapse into a black hole.

In the universe, a black hole is connected by a sphere called the event horizon. Given that ordinary three-dimensional space requires a two-dimensional object (a surface) to create a boundary inside a black hole, then in the volume universe, the event horizon of a four-dimensional black hole should be a three-dimensional object – a shape known as a hypersphere. The three-dimensional universe may be such a membrane, and the growth of the membrane is considered to be the expansion of the universe.

Since the four-dimensional universe may have existed for an infinite number of years in the past, and therefore has ample opportunity to bring the four-dimensional universe in different regions into a kind of equilibrium, membrane cosmology is a branch of physics that specializes in the study of cosmic membranes, which holds that the universe is actually embedded in some higher-dimensional membrane. The discipline also studies how higher-dimensional membranes affect our universe.