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

You’re imagining a single spot exploding, and that explosion expanding into space. That’s not how it happened. Instead, space itself was that single spot. And then space itself expanded.

To ELI5-ify it a bit more, the center of the universe stretched out to become the universe. So everywhere is the center.

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