AMA | March 2023
Sean Carroll's Mindscape: Science, Society, Philosophy, Culture, Arts, and Ideas
The Mystery of Dark Energy
% of the universe is made up of dark matter, which is some other kind of matter that has not yet been discovered in the laboratory and doesn't interact noticeably with light./n% of the universe is made up of dark energy, which is something that has a more or less constant energy density, even as the universe expands./nThis is what makes dark energy dark, because it changes the way the expansion rate of the universe evolves with time.
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