How to observe how long the universe has existed?

The earliest was in the last century, when NASA observed the specific lifespan of the universe through the "redshift phenomenon". When it comes to the universe, this is one of the "ultimate questions" that haunt the development of mankind. Once upon a time, we thought that the source of the universe was Nuwa Niangniang's opening of the world; Later, in the Three Kingdoms period, there was the story of Pangu opening the world.

Westerners, in their mythology, created the universe by the God Jehovah. In short, the ancients, who lacked scientific knowledge, often blamed some unexplained phenomena in nature to higher-level "gods" to explain.

Today, of course, we all know that the existence of the universe is actually caused by a great ** of the past and the present. At the center of the large ** is a singularity where the volume is close to zero, but the internal density, temperature, and mass are close to the "Planck limit". After the singularity is intervened by the outside world, it expands on its own;

After about a billion years of rapid expansion, the 93 billion universe has taken shape. The theory of the universe was not the mainstream of the academic world. A hundred years ago, the scientific community still respected Newton's "absolute cosmology", that is, the universe has no beginning and no end.

However, through one discovery, we not only confirmed that the universe was indeed created through the great **, but also deduced the specific age of the universe. This is a new breakthrough in the fifties of the last century, when NASA received a "signal" in the observatory.

This signal is the "expansion signal" coming from the depths of the universe. It shows that the expansion of the universe is still taking place, and that it is proceeding at a speed about ten times faster than the speed of light; The distance between celestial bodies is constantly expanding as space is pulled, which is known as the "redshift phenomenon".

Through the strength of this signal, we have succeeded in observing the lifetime of the universe: 13 billion years. Since then, various interpretations of the universe have become the mainstream of the academic community!

The age of the universe is judged by the age of the stars. Most stars are formed with the universe, and their age can be judged by their age.

The existence of the universe is actually caused by a big **. In the fifties of the last century, NASA received a "signal" in the observatory, which led to a new breakthrough. This signal is the "expansion signal" coming from the depths of the universe.

It shows that the expansion of the universe is still taking place, and that it is proceeding at a speed about ten times faster than the speed of light; Through the strength of this signal, we have succeeded in observing the lifetime of the universe: 13 billion years.

At the earliest, people observed the specific lifespan of the universe through the "redshift phenomenon" of the NASA in the century, so this is the existence time of the universe.

From the beginning of the universe to the present universe, it has been 10 billion years old, which is calculated based on the oldest stars, and it is also the most reliable method at present.

The cosmic microwave background radiation is formed by receiving light from the time of the universe, and the information brought by these lights can be roughly calculated after complex calculations.

Summary. Hello! We're happy to answer for you! As we all know, the age of the universe is 13.8 billion years, according to the theory of the big ** universe, the earliest light in the universe was born 13.8 billion years ago, and the diameter of the universe is at most 27.6 billion light years since the expansion of the universe.

How big is the universe? How much time does the universe exist?

Hello! We're happy to answer for you! As we all know, the age of the universe is 13.8 billion years, according to the theory of the big ** universe, the earliest light in the universe was born 13.8 billion years ago, and the diameter of the universe is at most 27.6 billion light years since the expansion of the universe.

The universe is physically defined as all space and time (collectively known as space-time) and its connotations. The Great Theory is a modern cosmological description of the evolution of the universe. According to the estimates of this theory, space and time appeared together after the great ** of 100 million years ago, and as the universe expanded, the energy and matter that originally existed became less dense.

The initial accelerated expansion is known as the inflationary period, after which the four fundamental forces known separate. The universe gradually cooled and continued to expand, allowing the first subatomic particles and simple atoms to form. Dark matter gradually accumulates and forms foam-like structures, large-scale fibrous structures and cosmic holes under gravitational pull.

Huge clouds of hydrogen and helium molecules were gradually drawn to the densest concentrations of dark matter, forming the first galaxies, stars, planets, and everything. Space itself is expanding, so objects that are currently 46.5 billion light-years away from Earth can be seen, because these lights were generated 13.8 billion years ago and are closer to Earth than they are today. While the size of the entire universe is unknown, the size of the observable universe can be measured, with an estimated diameter of 93 billion light-years.

In various multiverse theories, a universe is one of the components of a multiverse on a larger scale, and each universe itself includes all of its space and time and its matter.

The universe is classified as:

There is no classification of the universe. The broad definition of the universe is the general term for all things, the unity of time and space. The narrow definition of the universe is space and matter beyond the Earth's atmosphere. “

The universe appeared or existed, and the current theory is that it began with a singularity.

The time of the existence of the universe is the age of the universe, and it is now generally believed that the time is about 14 billion years, and this judgment is determined according to the theory of big **, it can also be said that the universe was born in a big ** 14 billion years ago.

The question is, is the big ** the only one? What's more, the time of the universe is not synchronized, and considering that time is fast and slow according to different spatial existences, it must be wrong to say that the universe was formed about 14 billion years ago.

Black holes eventually lead to the formation of singularities, but not inevitably. The formation of a singularity, the breakage of space, leads to the emergence of antispace, and at the same time detonates many black holes.

At the same time, white holes and anti-space also exist, but anti-space and antimatter exist for a very short time, and white holes existed when primitive galaxies were formed, so they are not long. None have been observed at this time.

Black holes appear to be constantly devouring objects, but inside the black hole are actually constantly compressing time and space, which can be understood as a black hole that converts matter into energy to compress time and space.

When a black hole swallows an object to a certain amount of energy, or because of a collision between black holes, time disappears at a point (the beginning of time equals the end), and space is infinitely smaller. This is where the singularity is formed.

The formation of the singularity, the disappearance of the space in the region, the chain causes the disappearance of other related spaces, this break is the emergence of anti-space, like lightning in the night, only the break in the universe is faster than the speed of light, the break can be said to occur synchronously, the speed is infinite, this is the singularity of the **.

The rupture of space disappears, the ** of the singularity, the dense anti-space disappears like lightning, and countless lightning terminals continue to release energy, impacting space and beginning to form white holes, and the released energy collides at the speed of light and erupts matter to form new galaxies, which is why galaxies are disk-shaped.

The white hole releases matter to form galaxies, due to the speed of light barrier in space, it is impossible to run in a straight line, and the white hole flips over the core of the galaxy formed at the end, which is also the reason why the core of the galaxy is spherical, because the edge of the galaxy is the white hole that erupts first to release the celestial body, so the age of the galaxy edge celestial body is older.