Startalk is a great podcast with fascinating topics and great celebrity interviews. Neil deGrasse Tyson is the director of the Hayden Planetarium in New York. He is the author of 12 books, and has been on a list of television documentaries. He has also had a guest spot on the hit television sitcom 'The Big Bang Theory' and was featured in a Superman comic book as himself. This podcast is among my top 5 educational podcasts.