Lex Fridman Podcast
#403 – Lisa Randall: Dark Matter, Theoretical Physics, and Extinction Events
Lisa Randall
And like we said, there's a lot of it, not necessarily in the disk, but just because it's a sphere, there's a lot of it sitting there. And the reason it doesn't collapse, as far as we know, is that it doesn't really, it can't radiate the same way. So because it can radiate, ordinary matter collapses.
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