What is the outer part of the universe? What about the outside?

Most people ask this question on the assumption that if the universe is finite, it must have a boundary. Since there are borders, what is beyond them? Reasoning in this way, the conclusion is that the universe must be infinite.

But this reasoning is wrong. Because space may not be simply three-dimensional Euclidean space (i.e., Cartesian coordinates).

We imagine that if human beings could never fly and could only move on the ground, we would find that the earth's surface had no boundaries from a two-dimensional perspective. What is North of China? It's Russia.

Further north, the North Pole, and then again, and again, back to where we were. There are no borders.

Modern physics believes that the universe is also like this. Space is curved, and if a spaceship keeps flying in one direction, it will eventually return to the starting point. Therefore there are no borders.

But the universe as a whole may be finite. All the planets in the universe are probably finite.

A finite, boundless universe, this is our world?

Therefore, I guess that the three thousand worlds that the Buddha spoke of are viewed in the so-called "higher level of space". Just as animals crawling on the ground think that the earth has no boundaries, we cannot see the "universe" "beyond the universe". You can only see if you step outside of three-dimensional space.

According to the theory of big **, the space and time of the universe are generated by big **. The universe that we can observe now and in the future is the whole of the universe, and there is no universe outside of it. The reason why we come up with concepts outside the universe is because of the logical limitations of our human thinking.

We only think about the universe according to the logic of the present, thinking that there is an inside and an outside, but we can't figure out what it looks like to exist without an inside and outside. Even the "appearance" is our human understanding based on logical reasoning, if a thing does not have a "appearance", then what it "looks like", we cannot imagine. In fact, we just have to think about what is the end of a thing that is infinitely divided.

Maybe there's nothing, maybe it's a completely new concept, maybe something "something", we can't imagine it. The problem of "beyond the universe" is just that.

The question of "beyond the universe" is ultimately a philosophical reflection. Whether there is an answer or not, others can't say clearly, only think about it yourself. When you figure it out, you can't explain it to others. There are some things in this world that are like this.

Philosophical questions. No one knows what's out there, so let your imagination run wild.

But one day it will be known, because there is only what will be known, and nothing that cannot be known.

The outer part of the universe just doesn't exist!

The universe is space, and the universe is time, and there is no outside.

The universe is the whole material world, and it has no boundaries.

There may be other universes outside of the universe.