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

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

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The Evolution of General Relativity

A neutron star with the mass of the earth would be the size of Los Angeles or something like that. Black holes a centimeter across. That's a lot of mass in a very tiny area. And what is the Schwarzschild radius for the earth? I feel like it's some small number. But you see, I know Wheeler was very worried about this. He said, what happens? Do you get this singularity or does it switch around and come out again? And it was, it was a big question. Should you trust the Oppenheimer model, Oppenheimer's nyme model or is that unrealistic because of irregularities?

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