#403 – Lisa Randall: Dark Matter, Theoretical Physics, and Extinction Events

1385.551 - 1406.716 Lisa Randall

And it's actually because of conservation of angular momentum, it stays a disk and it doesn't just collapse to the center. So our suggestion was that maybe there are some components of dark matter that also radiate. Like I said, that's far from proven. People have looked for disks. They see some evidence of some disks of certain densities. But these are all questions that are worth asking.