Hard to wrap my mind around this one. Anyone have any good analogies that fit?
In: 761
Yeah it never said that it was “small” nor “a singular point’, but more like “infinitely dense.”
So you know the universe is expanding right? It’s not that the universe is shaped like a bubble and there’s a wall (the “edge” of the universe”) and that the wall keeps going outward, it’s not like that at all. But it’s more like the space itself is expanding, the distance between point A and point B grows from 1 meter to 2 meter (I’m exaggerating of course). This expansion is so weak that if you have an atom at point A and point B, the gravity etc between 2 atoms can easily overcome the expansion. But over billions of years it adds up.
Now rewind the video. If we play the video backwards, then the universe is contracting. Then you get to the point where everything is closer to each other and it’s denser. At that point atoms cease to exist, it’s replaced by quarks, and what not. Everything is more dense, matter and energy, and infinitely so. We don’t know if it’s just one point or if the universe is already large at that point, we only know that it’s infinitely dense back then. Everything that we can see today (the “observable” universe) originated from a single point. So whether the universe really was not a single point but already large at the Big Bang is kinda a moot point beacuse everything that we can ever interact with (the observable universe) originated from one single point.
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