Sean Carroll's Mindscape: Science, Society, Philosophy, Culture, Arts, and Ideas
AMA | October 2024
Sean Carroll
So the observable universe expanding the light year per year is not—that's not it. That's quantitatively not quite right. But the observable horizon, our ability to look backward in time and see some things in the universe, is getting bigger because the universe is getting older. And the thing that bounds our observable horizon is that when you look back in time, you're
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