When he was nine years old, a visit to the Hayden Planetarium in New York City changed Neil deGrasse Tyson's life. From that moment on, Tyson decided he wanted to be an astrophysicist; thirty years later, he became the Director of that same planetarium. In the twenty-first century, Neil deGrasse Tyson has become one of the best-known popularizers of science and space in the United States. Through just about every form of media available—books, television, social media, journalism—Tyson has educated and inspired millions of people around the country and the world. This is his story.