In Lifechangers, Kevin Fong talks to people about their lives in science.

Astrophysicist and Director of the Hayden Planetarium in New York City, Neil deGrasse Tyson is well known in the US since he presented the TV series Cosmos: a spacetime odyssey. He talks to Kevin Fong about growing up in Brooklyn, becoming obsessed with the night sky and how he became a broadcaster and writer.

Image: Neil deGrasse Tyson, © Cindy Ord/Getty Images for FOX