"Black holes are very exotic objects. Technically, a black hole puts a huge amount of mass inside of zero volume. So our understanding of the center of black holes doesn't make sense, which is a big clue to physicists that we don't have our physics quite right."

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I think the cult of personality is the thing that people find a real problem with. It's hard to unify behind something that is unknown. I know more about black holes than I do about Donald Trump's ever-changing news. So I don't blame - like, I don't blame conservatives going, like "Hey, this is something that I believe in. And I don't know what he believes." But that could change. That could change in four months.

— Greg Gutfeld