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
The big bang was not an explosion of stuff moving out into space, it was an explosion of space itself carrying the stuff with it. Galaxies and galaxy clusters are gravitationally bound to each other, but every galaxy cluster is moving away from every other cluster.
If you blow up a balloon, every point on the surface of the balloon is moving away from every other point. A two dimensional person on the surface of the balloon would not be able to point to the center of the expansion, they would only know that *everything* is expanding. This is only an analogy, we don’t know if there are other spatial dimensions that we can’t comprehend, but it works well for getting the idea across.
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