How can the universe not have a center?

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If I understand the big bang theory correctly our whole universe was in a hot dense state. And then suddenly, rapid expansion happened where everything expanded outwards presumably from the singularity. We know for a fact that the universe is expaning and has been expanding since it began. So, theoretically if we go backwards in time things were closer together. The more further back we go, the more closer together things were. We should eventually reach a point where everything was one, or where everything was none (depending on how you look at it). This point should be the center of the universe since everything expanded from it. But after doing a bit of research I have discovered that there is no center to the universe. Please explain to me how this is possible.

Thank you!

In: Physics

50 Answers

Anonymous 0 Comments

The universe is expanding and ELI5 is to bring it down a dimension.

Imagine an extremely tiny ball that is squished into a point. Everything in this 2D universe is squished into this tiny space.
The ball starts inflating like a balloon. The ball expands and expands and eventually 2D ants that evolve on the ball. The ants can walk on the ball that is now enormous, and they ask “where is the center of our universe?” and the answer is nowhere and everywhere.

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