How many dimensions existed before the Big Bang?

I believe the current idea is that time, space, space-time, or something else could totally have existed before the Big Bang, but that we can never have knowledge about it.

I’m not sure if “before the big bang” has meaning we can understand.

It’s a bit like the country north of the North Pole.

There wouldn’t be anything, it would be literally nothing.

The question is, is the big bang resposible for all sub universes, or just ours, because a pocket univers back them would have been somewhat normal, and some superdense material escaped, and the big bang enveloped it and others turning them into pocket universes.

With this in mine there could be an endless cycle of this hapenning, we could be a 200th generation pocket univers (IE a universe inside 199 others) that keep making their own.

Maybe a universe is actually a cell in some larger being, like us who has billions upon billions of cells making it up.

As far as my understanding goes, space-time makes sense as a concept only after the big bang, whatever was before could very well have been completely different.

The 11 dimensions of the underlying Hyperverse, naturally

Top physicists all agree: “dunno…”

Part of M-theory dictates the existance of other universes (The Multiverse) and that the Big Bang was not the beginning of time, only of our universe. Also that there are eleven dimensions.

All of them, and none of them. Everything that was ever going to exist and everything that was never going to exist… together in a large soup of infinite probabilites.

Not only did time not exist before the big bang, space didn’t either.

This is at heart a metaphysical question. While observational evidence compels us to accept that the universe emerged from a big bang according to details calculated back to the first split-second, the evidence is equally mute on the nature of the singularity itself that spawned this big bang. It’s a deep scientific mystery and will likely remain so in the foreseeable future. What else can we do?

String and brane theories in higher spatial dimensions, compactified to 4D space-time (or 3D in the holographic view), are purely speculative. Absent testable inferences “it ain’t science.”

That doesn’t mean string theorists are wasting their time, however, if they can coax from their models some predictions that might be testable with reasonable technology. (Not, say, requiring a particle accelerator the size of the solar system.) I think there has been some progress along these lines, at least ruling out certain classes of theory.

In one view the big bang & resulting observable universe is but one cell of a higher-dimensional fractal structure of infinite extent, where big bangs routinely occur wherever branes collide. Or something like that.

That still leaves the question of why there is something rather than nothing. More metaphysics.

Well the answer is still far away from human mind. Only the creator of this universe existed even before big bang. It will exist even after the end of universe and the end of time. He is the only one who is powerful enough to start or finish the time any time he wants. He never feels tiredness. He does not need any relative or assistant. However, that does not mean, we should leave everything and sit aside like a monk. We should study this universe more and more. The open secrets of this univers will make us realize that bigbang did not start automatically. There was someone (definitely allah) who initiated the process of bigbang. Finally, we have to accept that Allah the most powerful, the most merciful and the most knowledgable is running this universe. We must keep on studying how he is doing this. Just be thankful to allah that he made us human beings and we are able to study Allah’s magnificant creations.

@anaalbir “Finally, we have to accept that Allah the most powerful, the most merciful and the most knowledgable is running this universe.”

And what evidence do you have for that myth actually being true?

I also don’t think that a being that commands genocide and commits genocide on multiple occasions can be called “merciful”

@anaalbir Interesting. Who is this ‘Allah’, and how did he exist before the Big Bang?

I have to admit, I was kinda disappointed that nobody had yet taken the obvious bait and flat out went to the “Goddidit” answer.

@Thammuz maybe not that many theists have “big bang, physics, dimensions” in their tags…

@The_Idler or maybe we have a higher class of theist round here

11, the number is constant regardless of starting point of one of the cosmoses in infinity and eternity.