...No scientist on Earth knows how a planet might blow itself up, which is probably just as well.
Dearest Carl. Reading Cosmos changed my life pretty much forever, and this is one of the lines that did it. He knew there's no reason why you can't enjoy a good laugh while you were reading your science.
If you haven't read Cosmos, go do so forthwith. Then follow up with Pale Blue Dot, and top it off with The Demon-Haunted World.