Following on from this thread. If the universe is infinite and was at the time of the big bang does that not mean that the size and contents was infinite? In other words at the BB there was already infinite amount of galaxies. I had understood that at, or just after, the BB the mass of the universe was in a very small space. If so, then these two theories, the BB and the infinite universe, seem mutually exclusive, and we can discount one of them if we have convincing evidence for the other. Or is our confidence in both of these so poor that we cannot discount either? Or am I missing something?