At the age of 9 he knew what he wanted to do with his life, and he never wavered from his goal. Now, he’s one of the world’s most famous scientists. He’s earned the title of “Most Powerful Nerd In The Universe” from National Public Radio and the title of “The World’s Sexiest Astrophysicist” from People Magazine. He was instrumental in cutting down the number of planets in our solar system, and in doing so upset entire generations who had come to love Pluto as the quirky, smallest planet. And who is this icon of science that’s recognizable by the general populace? … Neil deGrasse Tyson.