lol pls read: “This is kind of a mess. The question originally didn’t specify that the Big Bang was excluded. John Rennie and I both answered on the assumption that the Big Bang was the only logical place to look for a boundary. Our answers contradict one another. The new version of the question excludes the Big Bang. However, the OP has never explained why anyone would expect a boundary anywhere else”.

Excluding big bang itself, does spacetime have a boundary?

Link: https://physics.stackexchange.co

My understanding of big bang cosmology and General Relativity is that both matter and spacetime emerged together (I’m not considering time zero where there was a singularity). Does this mean that