Astrophysicist Neil deGrasse Tyson is an expert on just about everything.He's debunked myths in sci-fi movies. He's weighed in on the effects of climate change. And last week, he used science to predict when LeBron James will retire from the NBA. (It's age 38, apparently.)We talk about the new book, but we also ask him some of your burning questions.Want to support 1A? Give to your local public radio station and subscribe to our podcast. Have questions? Find us on Twitter @1a.