Is the universe really infinite? Why?

First of all, it is determined that the universe is finite and large, and the infinite is space. The universe includes space, time, matter, energy. The big ** happened in a finite past, so the scope of the big ** to expand the universe is limited.

Someone asks, what's outside the universe? The space outside the universe is silent, without matter and energy, so it is not considered a universe. So the universe is finite!

I can only tell you that, according to the mainstream view, the universe is finite, but there are no boundaries. The image is a spherical surface, it is limited, but you can't go to the border.

All matter was initially concentrated at one point, and due to some kind of trigger, it ** went away, and all matter quickly moved away, and the whole universe expanded, and until now, it is still expanding. Figuratively speaking, this sphere is constantly getting bigger. But the matter and energy in the sphere is still so much, but it is getting thinner and thinner.

As for whether there is an end to expansion, whether it is finally equilibrized, or whether it shrinks to its original state of super-hot and over-crowded, or whether it expands infinitely to infinitely thin. This is what contemporary physicists are debating.

First of all, your question is not accurate, it should be asked is the universe infinite, there is no big print. Because the universe is not only space, but also time.

The most common theory on this issue is that the universe is finite but boundless (and this is only speculation at the moment). This question involves the most cutting-edge physics, philosophy, and even religion, and it is not clear here.

You have to give points!

If the universe is infinitely large, then there is no expansion or contraction for it, it should be finitely large, infinitely expanding, but what its edges look like, what it feels like to the touch, and whether it can chisel a hole remains to be explored.

There is a limit to everything, but we cannot measure the current universe.

But by "infinity", I think it means that the universe is constantly expanding, and we can't say how big it is, how big it is, and how big it will be in the future.

I think infinity should mean infinite expansion, which cannot be measured.

My own, I hope you are satisfied.

Everything is finite, it's just that its scope has gone beyond the scope of our current life exploration, so it is ignored as infinite.

Limited, but people can't reach the edge of the universe.

With the current level of technology of mankind, you can't solve your problem.

Just like man, he is small but also great, more abstract.

This one. Just wait for you to study it slowly.

This question can't give you a definite answer right now.

Because no one knows.

The universe is finite and unbounded, and according to the theory (expansion theory) the universe is very large, but we can only see a part of it, and the appearance of the universe is particularly flat. For example, the Earth looks very flat from the surface, but it looks like a circle from the perspective of the universe. From a distance, you will know that the horizon is curved.

The universe is vast. It includes the earth we live in, the solar system.

All the planets, and all the stars floating in the night sky, even galaxies that are too far away to see.

Not so long ago, it was believed that all the stars floating in the night sky existed in the universe. And Edwin Hubble changed that perception. Hubble's discovery is wonderful, the Hubble Space Telescope.

The name is also ** to him.

The size of the observable universe is known. His area is 93 billion light-years, a distance that is a helpless number for the astronomers who discovered it.