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
Picture a super-stretchy rubber sheet that goes on and on in all directions forever – an infinite rubber sheet. There’s no center to the sheet – it’s infinitely large. Now imagine there are tiny dots everywhere on the sheet as close together as is possible to place such dots, really squeezed together so that you really can’t tell where one dot ends and another dot begins (but they are separate dots nonetheless). And now image that the sheet is stretched evenly right and left and forward and backward, it just keeps getting stretched and stretched and stretched. As it’s getting stretched, it doesn’t get any larger (it was infinite to begin with), but the dots are all getting stretched further and further apart. So the sheet is expanding, and everything on it is getting further and further away from everything else on the sheet, but there is no center of expansion – it’s expanding everywhere all at once. Bump that up to three dimensions and picture an infinite (and infinitely stretchy) block with dots crammed in everywhere. Stretch that up and down, right and left and forward and back. All the dots move away from all the other dots, yet there is no center. The expansion looks the same no matter where you are in that block.
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