before the big bang 7: an eternal cyclic universe, ccc revisited & twistor theory Published 6 years ago • 1.2M plays • Length 55:26 Download video MP4 Download video MP3 Similar videos 19:00 "this universe existed before the big bang" ft. roger penrose 16:58 what was there before the big bang? 3 good hypotheses! 1:29:46 "are we seeing signals from before the big bang?" - professor sir roger penrose om frs