Neil deGrasse Tyson is an American astrophysicist, cosmologist, author, and science communicator. He is known for his work in popularizing science and making complex topics in astrophysics accessible to the general public. Tyson has served as the director of the Hayden Planetarium in New York City and has made numerous appearances on television, including hosting the reboot of the PBS series "Cosmos: A Spacetime Odyssey.