Sean Carroll's Mindscape: Science, Society, Philosophy, Culture, Arts, and Ideas cover image

28 | Roger Penrose on Spacetime, Consciousness, and the Universe

Sean Carroll's Mindscape: Science, Society, Philosophy, Culture, Arts, and Ideas

00:00

The Hawking Point

Inflation, in the inflationary model, started very close to the Big Bang and then this huge expansion took place. And most things which happen in that region would be spread out to an enormous size. So only at the very end would you get something which is restricted to this four degrees across the sky. That's the size of it. We don't see the signal bigger than that. Any cluster turns into a whopping big black hole. I think pretty well all the matter gets swallowed. Now one of the real problems for inflation of this, you see, is that the point you would be seeing, not the Big Bang inflation, would be what's called the graceful exit moment. If

Transcript
Play full episode

The AI-powered Podcast Player

Save insights by tapping your headphones, chat with episodes, discover the best highlights - and more!
App store bannerPlay store banner
Get the app