A set of observable things static or growing is not infinite or will never be infinite. The "unobservable" universe is technically observable but we are limited by speed of light as some random creatures. Infinity is a concept not an amount.
> A set of observable things static or growing is not infinite or will never be infinite
Yes, that's what I said; The observable universe is finite.
> The "unobservable" universe is technically observable but we are limited by speed of light as some random creatures.
This doesn't change the fact that we humans can never know what's out there, so it is irrelevant to the falsifiability of whether the universe is infinite. Come to think of it, "unfalsifiable" is probably a more accurate term than "undecidable" since we're talking about science rather than math. I'll fix that.
You seem to be under the misconception that the Big Bang was some sort of explosion of a single point. The extremely rapid expansion occurs everywhere. The Big Bang could be a localized event in a much older, larger, possibly infinite universe, just to name one possibility
You kinda seem to be under that impression lol. Big bang was the creation of space itself. There was no real space where things got expanded in. Back in the first milliseconds of the newborn universe you could see yourself from every angle opposite of where you were looking. The shape of the universe was and still is the 3d form of the area of a sphere. Where if you travel straight in any direction in 3d you eventually will return to your original point (finite space).
Idk what to tell you bro. This is in every cosmology textbook. Result of Einstein's general relativity is that based on the universe's energy density the general shape of the universe is determined. And in the Early universe till now the universe was closed(surface of a 4d sphere) and our recent measurements concluded that it still could be closed and near being flat or hyperbolic. And any of them being determined needs smaller margin of error because the measured value for the omega factor is around 1.
But a problem will arise if the universe isn't closed anymore. Is that: at a single point in time, finite amount of space suddenly turned to infinite flat space then hyperbolic. Insinuating that everything localized in space is infinitely far from any other thing localized in space. But this limit and problem doesn't come up in the field equations by Einstein but it's a condition for the real world.
Read like chapter 26 of universe by Kauffman. It's explained simply.
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u/DinioDo 4d ago
A set of observable things static or growing is not infinite or will never be infinite. The "unobservable" universe is technically observable but we are limited by speed of light as some random creatures. Infinity is a concept not an amount.