The question that has plagued me for years, the distance between the age of the universe and galaxie

This is no coincidence. It's intrinsically connected. Because we see that the light of galaxies 13 billion light-years away was emitted 13 billion years ago.

In other words, we see this galaxy 13 billion years ago. So some reports will mention that this is the galaxy at the beginning of the universe. So that you should already know.

This is the limit of what we can see in the distance. Because it was no sooner, it was no longer far away.

As for the speed of this intergalactic distance, I have not calculated it. But this calculation is not complicated. You can check it out for yourself.

Because according to Hubble's Law, the farther away galaxies are, the faster they will leave us. So the speed of moving away from each galaxy is not the same. You can choose a near point to do the math.

For example, the Great Nebula in the constellation Andromeda is now 2 million light-years away. And according to the big ** theory, it was with us 13 billion years ago, right? And this speed can basically be regarded as a constant speed, because there is no external force acting after the big **.

So the velocity between the Milky Way and it is 2 million light-years and 13 billion years. Convert it to km h and see if your data is right.

The universe reached its current size in an instant. This is due to the expansion of space, which expands much faster than the speed of light, which does not violate the theory of relativity.

The universe was born about 15 billion light-years. After that, the universe expanded infinitely at the speed of light into the surrounding space. The fastest movement in the universe is the human gaze, faster than the speed of light. If you have a telescope far enough, you can see the edge of the universe at a glance.

The fastest movement in the universe is the human gaze, which is a stupid statement, we can see a celestial object 15 billion light-years away, not because our gaze is instantaneously there, but the light there has just reached our eyes, and the reason why we can't see the stars of 16 billion light-years or 20 billion light-years is because the light has not yet reached our earth, and it is still traveling on the way.

Personally, I think it's a coincidence, I think the landlord asked a childish question, like I asked you "You're 20 years old this year, and you're going to spend 20 minutes going to your neighbor's house, is it a coincidence or what?" ”

The universe was born about 15 billion light-years. After that, the universe expanded infinitely at the speed of light into the surrounding space. The fastest movement in the universe is the human gaze, faster than the speed of light. If you have a telescope far enough, you can see the edge of the universe at a glance.

The distance between galaxies is increasing, that is, they are moving away from each other, which is the view of the theory of the expansion of the universe.

It can be clearly said that the distance between any two galaxies in the universe is not fixed, but in relative motion, because the space of the universe is constantly expanding, so that the galaxies are moving with them.

At the beginning of the 20th century, it was widely believed that the distance between the stars in the universe was fixed. In 1913, astronomer Shriver observed the redshift of galaxies and concluded that galaxies were receding.

In 1915, Albert Einstein proposed the general theory of relativity, which theoretically predicted that the relative distance between the stars in the universe is getting farther and farther apart, that is, the whole universe is constantly expanding. The distance between galaxies is getting farther and farther apart, and the reason for the widening distance between galaxies is not caused by the movement of the galaxies themselves, but by the expansion of the universe.

This prediction of Albert Einstein was later confirmed by the observations of the astronomer and writer Hubble.

The application of the Hubble telescope in astronomy has greatly advanced the study of galaxies in the universe, and the distance between galaxies has been increasing so far, and the galaxies we observe are gradually moving away from us, and they are accelerating away from us, and the speed of the distance is proportional to the distance between galaxies. There is still some controversy as to why the universe is speeding away from us. At present, the mainstream view is that the expansion of the universe is not caused by the inertia of the universe to keep it away from each other, but for another reason, cosmologists and astronomers believe that there is only one phenomenon that can explain the accelerated expansion of the universe, that is, there is probably a "dark energy" in the universe, and it is precisely because of its existence that it causes the phenomenon of accelerated expansion of the universe, and the universe will continue to expand.

How the distances between galaxies in the universe are changing is changing in the orbit of celestial bodies.

What we see is something 60 million light years ago, that is, it emitted light 60 million years ago, and we only see it now. Maybe it's gone now, but we won't see it until 60 million years later. Closer, like when you look at the sun now, it's the sun you saw 8 minutes ago.

Because the time the sunlight reaches the earth is more than 8 minutes. This has nothing to do with the age of the galaxy.

Light-years are a unit of distance, not time. We will be able to see it in 748 million years. 2, 60 million light years away means that its light needs to travel 60 million years to reach the earth, what we see and photograph at this time is the light emitted by this galaxy 60 million years ago, and these lights constitute the appearance of this galaxy 60 million years ago, so no matter how long it lives, as long as it has existed and emitted enough light to spread to the earth, we can see it, even if it no longer exists.

If the lifespan of the brigade is only 12 million years, it means that the galaxy has disappeared for at least 48 million years, and at most 60 million years.

Upstairs said a little confusing, about the sun, hungry for me. 2. Not the age but the life expectancy is about the same. ,0,.This galaxy is only about 12 million years old, 60 million light-years away from our solar system.

The galaxy is only 12 million years old, 60 million light-years away, how can we see and photograph it.

The big ** theory shows that there was a burst phase at the beginning of the expansion of the universe, and the expansion rate of the universe at this stage was much faster than the speed of light.

The new theory of time shows that time gradually slows down with the evolution of the universe, and we can infer the speed of the expansion of the universe at the beginning of the universe relative to the time at that time according to the speed of time now, and we will inevitably come to a conclusion that the expansion is faster than the speed of light. This new theory seems to explain the phenomenon that the universe expanded faster than the speed of light in the early days of the Great **. But this theory has just been published, and no more research has been conducted.

The membrane theory mentioned in the recommended answer is also an explanation, but the theory seems to be closer to the observation of the explanation of the more macroscopic parts. There is also a legend that in addition to time, the macroscopic space we are in is higher than 2 less than 3 dimensions (see 09 American "Science"), and there are another 6 dimensions lurking in the scale of 10 -33 cm, in any case, the prospect of membrane theory does not look very optimistic, and the existing theory is difficult to support another large-scale macroscopic dimension that we cannot observe.

The distance between the stars is determined by the way they move towards each other. Galaxy clusters are distant from each other without much mass energy connection, and as the inertia of the large ** gradually expands away, the galaxies inside the galaxy cluster may also happen to be thrown out of the galaxy cluster because of the gravitational force between them, or collide or move away. The star system inside the galaxy is much more closely connected and has little to do with space expansion.

As the universe expands, galaxies can recede faster than the speed of light. Special relativity may not apply to the receding velocity of galaxies.

First of all, in terms of understanding the meaning of the expansion of the universe, the recession speed of galaxies is not the speed of galaxy motion.

The universe expands, and there is no expandable space that is pre-provided to it. At the time of expansion, there is no fixed spatial backdrop stage. The expansion of the universe is the expansion of space between galaxies.

Expansion occurs in all directions between galaxies. But inside galaxies, the space inside the galaxy does not expand because the gravitational binding force is stronger than the expanding force. The Milky Way doesn't expand, the solar system doesn't expand, and neither do you and me.

Therefore, the expansion is like a balloon, the galaxy is the point on the surface of the balloon, the balloon expands, the distance between galaxies increases, but the galaxy itself does not increase.

Second, the expansion of the universe is the expansion of space between galaxies, not the physical movement of the galaxies themselves.

There is no dynamics in the expansion of the universe. If the receding velocity is not the velocity of the galaxy, the expansion does not apply to the dynamics of physics, and it does not apply to the special theory of relativity.

Thus, for the expansion of the universe, galaxies can recede (or move away) faster than the speed of light.

When we talk about time, we are talking about the trajectory of the tangent point (tooth bite) of the material cycle at this level. The speed of light we are talking about is the speed at which the matter in the next layer of our level (the particles we are talking about) is decelerated by a combination and rises exactly into our level to form the physical matter in our level (that is, the highest speed in our level). In the same way, the speed of matter on our previous level is much slower than the speed of matter on our level.

Fire of the Wind |The [cosmic expansion] included in the fifth-level "answer" should be understood by me to be the synchronous expansion of all matter in the universe's scope, and at the same time, its time is also synchronously elongated.

There are several reasons for this.

1. The age of the universe is to design a reasonable cosmological model through some astronomical observations, and then calculate the age of the universe through the model. Therefore, the accuracy of the age of the universe is subject to observational errors and the correctness of cosmological models.

2. The age of galaxies is calculated through the theory of formation and evolution of the galaxy and observations, so it is also subject to observational errors and the correctness of the model.

The two are calculated using different methods and principles, and only one of them is incorrect or not accurate enough to cause such a contradiction. The errors of astronomical observations (large-scale long-distance astronomical observations) are very large, and these are the reasons for the contradictions.

Moreover, the encyclopedia says that the age of the total galaxy is 20 billion years, which is very unreliable data.

Hope it helps.

You should be a part of the conversation, I don't know what I talked about earlier, it's hard to understand, but the current understanding of the universe comes from the existing knowledge of human beings, and these existing knowledge may have limitations or even errors, and it is very possible to find that the understanding of the universe and human beings is different or even completely different in the future.

For the first two questions, we really don't know how big the universe is, so we can't deduce how many galaxies there are. As for the latter question, it is also unknown whether it will happen today in N years, and everything is changing. According to the view of cosmic parallelism, there may be an infinite number of universes, each with the same solar system, the same earth, and the same self, but doing different things.