Sean Carroll's Mindscape: Science, Society, Philosophy, Culture, Arts, and Ideas
AMA | October 2024
Sean Carroll
It can change from one kind of stuff to another, but it's still starting from the same point and just doing its transformations. Whereas, because we've now defined energy in a way that does not include the gravitational field, the fact that in an expanding universe, gravity is changing over time, the universe is expanding, right? Things are getting more dilute as time goes on.
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