Neil Degrass Tyson

" Neil deGrasse Tyson is one of America’s leading spokespersons for science. He is an astrophysicist and, since 1996, the Frederick P. Rose Director of the Hayden Planetarium at the American Museum of Natural History on Manhattan's Upper West Side. Since 2006, he has also been the on-camera host of PBS's NOVA scienceNOW. He has been a frequent guest on The Daily Show, The Colbert Report, The Big Bang Theory and Jeopardy!. "