Yeah Knucis, but as you said the Universe constantly expands into the nothingness. And it constantly expands HARD into the none which means it is infinite, I mean the expanding is somewhere like the speed of light. So if someone tries to find the end of the Universe, he'll never reach the end because the Universe constantly expands with the speed of light or smth.
Therefore it's not infinite
And no, it's not expanding at the speed of light. It's actually expanding alot faster due to dark energy. The nothingness IS just plain NOTHINGNESS, which means it's made of nothing, ZERO. How can ZERO be infinite?
The Universe is not infinite, it's just really, really big.
If we ever go faster than light (which is impossible because it would break up the relativity theory) we could get outside the Universe. Its "border" I mean. That way we could prove it's not infinite. Although we would cease to exist!
Our Universe isn't the only one. Our Universe + infinite more are placed in the dimension! Yes, our Universe stands on our dimension. Other Universes stand on the dimension too.
That's a theory. Called Multiverse theory. There can be a sea of unlimitated universes with their own laws of physics or they can be simply equal to this one. Like a parallel universe. If this is true we could exist in more than 1 universes!
The dimension we know is 4D, which mean is somewhat a 3D cube with active things going on in it. OUR dimension is standing near another dimension where things can be a whole lot different from the things in our dimension, like the laws of physics. Get it?
Actually we are in a 3D spatial dimension with 1 temporal dimension
In this world (w/e) you can only see: back, forward, up, down, left, right. That's what we call a spatial dimention. It's made up of 3 axis. (X, Y, Z).
Temporal dimension we just know 1! Like, time only goes "forward".
Although, through the multiverse theory, there could be other univeses with their own dimensions.
Lets imagine (we cant
) a 4 spatial dimension universe with 2 temporal dimensions.
A hypercube shadow (a cube with 4 dimensions) would be something like this:
That's only a shadow on the 4D dimension. Because we cant really see a 4D object.
For example, our shadows are in 2d right? Not 3D. The same happens in 4D. Their shadows are 3D.
And fuck, a 2 temporal dimension universe. How the fuck would we imagine time going forward and up at the same time? This seriously mindfucks the shit out of me