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
One of the most common ways to describe the universe is the balloon analogy.
Whereby it is depicted that all of the galaxies and stars and matter that make up the universe are on the outside of an ever-expanding balloon.
The common misconception though is that the interior of the balloon represents the volume of the universe and this is not the case.
The surface of the balloon essentially being a 2D service represents 3D space. The ever expanding air volume inside the balloon can represent the fourth dimension of time. So you’re depicting a four dimensional construct with a three-dimensional object.
Tldr; The surface of the balloon is the three dimensional universe and the air volume inside is the fourth dimension of time. The surface of the balloon has no center and if you were an observer on the surface of the balloon every spot on it would look like the center from every other observable point.
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