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As I understand it Georges Lemaître, upon learning about Hubble's discovery that space is expanding, came up with the big bang theory. He thought that if space is getting bigger, then it must have been smaller at one point, and if you go back far enough you get an extremely dense singularity. From this, all we would know is that the universe was once in a singularity, then expanded into the universe as we know it. So then why do people say that the big bang created space and time? How would we know this? And wouldn't this also imply that it created all matter and energy, because how could they exist with no space and time, unless they are in some other dimension separate from space and time? So did the Big Bang create energy and matter?
I understand that this question is probably breaking the bounds of physics, and entering into the territory of broader philosophy.
I understand that this question is probably breaking the bounds of physics, and entering into the territory of broader philosophy.