Neil Degrasse Tyson
AGE: 48
OCCUPATION: Astrophysicist
NUMBER OF TIME COVERS: 0
PREVIOUS APPEARANCES ON THE TIME 100: 0
PRO: Director of the Hayden Planetarium at the American Museum of Natural History. Tyson is an active researcher, prolific author and tireless communicator of the wonders of his field.
CON: He has no earth-shaking discoveries under his belt.