This article is inaccurate I believe.  It&#x27;s inconsistent to state that we believe that the Big Bang theory is a theory about the origin of the Universe and in the same time state that before some point in time we don&#x27;t know what happened.  If we don&#x27;t know what happened before some time t, then we don&#x27;t know the origin, by definition.<p>I vaguely recall a physicist stating that a more accurate description of the big bang theory is that a long time ago, about 13.8 billion years ago, the whole universe was much, much more dense and hot, actually denser and hotter than the core of any star, and that it very quickly expanded (or rather diluted) and cooled.<p>Back then it very much is possible the Universe was still infinite in space anyway, it was just much denser and hotter.<p>And before that, we simply don&#x27;t know.