Sean Carroll's Mindscape: Science, Society, Philosophy, Culture, Arts, and Ideas
AMA | October 2024
Sean Carroll
And with those inputs, you solve the Friedmann equation for how the universe expands. And then, of course, in the real world, when you're a slightly more sophisticated cosmologist, you actually measure these things. You go, oh, here's how much radiation we have. Here's how much matter. Here's how much dark energy.
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