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Before the Big Bang - Roger Penrose 7/9 (09' 59") [Idius] | P 1 | P 2 | P 3 | P 4 | P 5 | P 6 | P 8 | P 9 |
Roger Penrose speaks at George Mason University as part of the Aharonov Distinguished Lecture Series. He discusses the possibility that there was time before the big bang.