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#137 – Alex Filippenko: Supernovae, Dark Energy, Aliens & the Expanding Universe
Lex Fridman Podcast
Is There a Quantum Theory of Gravity?
Is it philosophically or practically possible to detect signs that this was before the Big Bang? We don't have a single verified, fully self consistent, experimentally tested quantum theory of gravity. So my own feeling is probably these things don't survive. I don't think we've seen any evidence in the cosmic microwave background radiation of information leaking through. It's just a 5% chance that the microwave background had that distribution just by chance.
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