Where is the center of the universe?

Look up at the starry sky and you will see stars lying everywhere. This feels like we are the center of this universe. But where exactly is the center of the universe?

In fact, the universe has no center. Since the Big Bang happened 13.7 billion years ago, the universe has been constantly expanding. The Big Bang was not an explosion that exploded from a central point.

The universe began from an extremely dense and small state, then many points in the universe expanded together at the same speed and continued until today. Therefore, the universe has no certain starting points, so there is no center for the universe.

The universe does not start from a central point, but a lot of points expand to get the universe as it is today.(Photo: NASA).

To make it easier to imagine, imagine an ant in a two-dimensional space crawling on a spherical ball. From the perspective of the ant, every place on the surface is the same, there is no center of the ball and no corners at all.

If we blow up the balloon, the ant will see the two dimensions around it expand. If we draw dots on the surface, these points will gradually be separated, like the galaxies around us move away.

For ants living in two-dimensional space, a third dimension perpendicular to the surface of the ball and then through the center of the ball will not have any physical meaning to it.'Ants can go forward or backward, go left or right, but it will not have the concept of going up and down when it lives in two-dimensional space,' astrophysicist Barbara Ryden at Ohio University, said.

Our universe is the 3D version of the 2D universe for ants. The universe we are studying is starting from the Big Bang, and it's a limit to our thinking.

But maybe the universe is infinite but we still don't know. If this is the case, the universe is like a balloon being blown forever. Galaxies stay far away from each other forever, so the infinite universe will have no limits and no center.

Observing the galaxies, we see that they are moving away from each other and showing the expansion of the universe.(Photo: APOD).

This universe is flat or curved depending on the total mass and energy of the whole universe. If the mass density and energy of the universe are both at the right density, the universe will be flat and expand regularly.

But if this density is higher than the limited density, the universe will have a curved shape like a ball. Attractive interactions will slow down, eventually making this process completely stop.

So far, ideas and theories about the universe's overview still draw a picture of the flat universe, such as the theory of cosmic microwave background radiation, the remnants of the remnant. Big Bang. But this is still not certain because the understanding of cosmologists is too little. Just like standing on the surface of the Earth we will see the Earth flat, not a sphere.

In short, this universe has no center and no corners , supports the principle that nowhere in the universe is more special than anywhere. Observing the movement of galaxies shows that the universe is still expanding constantly after the Big Bang.