"When it comes to 'callings' we usually think of people who feel drawn to religious career paths. But if you ask Neil deGrasse Tyson how he became an astrophysicist he says: 'I think the universe called me. I feel like I had no say in the matter.'"

"Tyson, director of the Hayden Planetarium at the Museum of Natural History in New York, is a prolific writer and frequently cited authority on astronomy in the popular media. He's hosted a four-part series on Novaand appeared everywhere from The Tonight Show to The Daily Show."

"This spring, Tyson hosts a new TV series called Cosmos: A Space-Time Odyssey. It's an update of the influential 1980 PBS series Cosmos: A Personal Journey. Tyson was entering graduate school in astrophysics at the time and remembers watching Carl Sagan host the original Cosmos."