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

AMA | October 2024

6230.543 - 6253.942 Sean Carroll

And what you're asking is, how do we know they're accelerating? Well, that goes back to Galileo. You don't need Einstein for this. The idea of relativity, if you're either Galileo or Einstein, is that there is no preferred location in the universe. And there is no preferred velocity in the universe. But there is a preferred acceleration, namely zero.

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