Is the universe finite or infinite?

I don't know if the universe is finite, but if the universe is infinite, then the night sky should be bright, not black. Because there are infinite stars in every direction, and although the rays of a star are faint, the rays of an infinite number of stars add up to be brighter than the sun.

This is known as the Olbers paradox.

Since about 1910, astronomers have been studying the spectrum of extragalactic galaxies and have discovered that galaxies have systematic redshifts. [1] By 1917, they had figured out that all but a few galaxies close to Earth showed redshifts. The farther away the galaxy, the more significant the redshift.

In 1929, the American astronomer Edwin Hubble proposed the famous "Hubble's law", declaring that the speed at which galaxies recede (v) is roughly proportional to their distance from the Earth (r), that is, v = h0r, h0 is called the Hubble constant, and now its value is determined to be 50 kilometers (seconds, millions of parsecs) [2].

The universe is finite,!

It takes 15 billion light-years for the speed of light to reach the edge of the universe

But the universe is not expanding drops!

These 15 billion light years are still expanding.

If it is infinite, then what is the universe?

For the time being, the universe is boundless. The so-called bounded universe is only the part that human beings can estimate, and that part is already terrifyingly large.

To use an analogy, there is a Xinjiang ant who has crawled all his life and has never climbed out of Xinjiang, so he said that Xinjiang is boundless. Later, his descendants continued to climb, and finally climbed out of Xinjiang and came to Gansu, so the science of ants reached a new peak, it turned out that Xinjiang has a border, and there is Gansu. Is Gansu the end of the world?

So countless generations of ants continued their scientific practice, continued to climb, and finally traversed China, came to the East China Sea, and finally couldn't climb anymore, looking at the boundless sea, the ants sighed, the world turned out to be really boundless. In fact, on the other side of the sea, we know that there are many things that ants don't know.

People in the universe are like ants on the earth, there is still a long way to go to understand the whole world, maybe billions of years later, the sun will be big**, human beings will be extinct, and human beings will not be able to understand the entire universe. If the universe has a limit, but for the destroyed human race, this limit is actually boundless, and you don't have the time or ability to know the whole limit.

Infinite. Because the universe is a combination of time and space. So unlimited.

The universe is as big as the heart is.

The universe refers to time, and the universe refers to space, so it is infinite.

Space refers to time, and space refers to space, and if time and space are finite, the universe is also limited.

It should be infinite, if only you could go and see it. Hehe!

Finite, who knows that there is no universe outside the universe?

To ** what universe is finite or infinite question, in fact, there is not much meaning, everyone's thoughts are different, you can say that it is finite, you can also say that it is infinite, we are not physicists, and we do not deal with the universe, living our own life is what we are worried about,The problem of cosmic life is something that I only think about when I am idle and bored.

The universe is actually infinite, because the universe is constantly expanding, so there are no boundaries.

The universe is considered finite. Because when we look around the universe, it looks flat, almost like a piece of paper, with no observable curvature. But we continue to look at the opposite side of the universe.

As we see on Earth, if a person travels a long enough distance in one direction, they eventually return society to their original position. If the universe were at least 250 times larger than our currently observable universe, it could still come back to us. Although this is beyond our ability to know, it is possible.

So theoretically, the universe is still considered finite.

As far as the evidence is available, the universe is infinite because the universe is constantly expanding from moment to moment.