There is a beginning universe.
The BVG has been used effectively by William Craig to show the universe (if not ours) must have a beginning. He defended it effectively against Lawrence Krauss, Sean Carroll and others. I saw the Carroll debate in New Orleans where in order to defend against the BVG Carroll showed a picture of Allen Guth holding his laptop with the words "there is no beginning". debate Of course as a contributor to the BVG Guth was joking around. Nevertheless it's telling that a celebrated physicist (Carroll) could not defeat the BVG as given by a philosopher. This is a clip where Guth confirms a beginning. Guth . The BVG proof in pdf form is described here BVD proof It concludes: "we offer a simple kinematical argument, requiring no energy condition, that a cosmological model which is inflating -- or just expanding sufficiently fast -- must be incomplete in null and timelike past directions. Thus inflationary models require physics other than inflation to describe th...