Can a moon rock aid political decision-making? In astrophysicist Neil deGrasse Tyson’s upcoming interview with Bill Clinton, the former president suggests not only that it can, but that it did. In this clip, he says that he kept one on his desk in the Oval Office for just that purpose:

Tyson’s interview with Clinton kicks off the season premier of StarTalk this Sunday on National Geographic Channel, but Clinton isn’t the only surprising figure to talk about science and space on Tyson’s show. Here are some other unexpected guests.

Tyson dutifully acknowledged Jimmy Carter’s “geek credentials” when he sat down with the former president, who has a graduate degree in nuclear physics. In their interview, Carter explained how his background in