I don't know where we left the size of the universe conversation. I do know that my initial response in this thread was quite bone-headed.

I suggested the universe is a sphere which is 13.7 billion light years in radius. This is evidence of a mind with just enough information to be dangerous. Sorry.

The major problem with my analysis is that it assumes that space and time are independent and non-relativistic. Both of which are assumptions which are not remotely justified in this case.

The real story is that it's not straight-forward to answer.

Here's a start.

More to come.