It's Official: We Were WRONG About the Big Bang

'What is the universe expanding into' is not a question whose answer 'we can never know'. It is a question we can recognize as _a false question!_ It has this in common with the induction problem of science itself, solved by Popper, through recognizing that it was a false question.

To understand the mistake of this question we must first understand _exactly_ how space comes about. In particular, how come that space has of necessity 3 spatial linear dimensions, and why there cannot be more than those 3.

To know what space is, we have to know what position is first.

Just consider. If something moves, it always moves with respect to something else. If something is standing still, it is always standing still with respect to _some_ objects! We cannot point at a single object and say: _that is the one_ that is standing still! An object, being absolutely at rest does not exist!

And that is because of the Galilean Principle of Relativity, which says that the laws of nature are the same for all observers that do not accelerate and have a definite speed.

But 'speed' is a relative concept! Only the light speed is absolute! That is, the light speed is the same for all observers. And that is, because the light speed is a direct consequence of Maxwell's equations, which are laws of nature, and therefore are subject to the Galilean Principle of Relativity.

To understand why 'where does the universe expand into', is a false question, one must therefore think very deeply about the Galilean Principle of Relativity.

The crucial question one has to ask is this: 'what, exactly, do we mean by _position,_ if we also take the Galilean Principle of Relativity into account? 

Or,  better, how _exactly_ comes the Galilean Principle of Relativity come about? How is this principle even possible?

_Only then_ we can understand space and time. And _only then_ we can see, that the whole question: 'what is the universe expanding into' is a wrong question, because the idea of 'position' it implicitly assumes, is not a valid concept.