Neil Tyson on NASA

On The Early Show, Neil deGrasse Tyson—an astrophysicist and head of New York City's Hayden Planetarium—argues for NASA's relevance, 40 years after man first walked on the moon.

Updated Apr. 25, 2017 2:33PM EDT / Published Jul. 25, 2009 11:14AM EDT

On The Early Show, Neil deGrasse Tyson—an astrophysicist and head of New York City's Hayden Planetarium—argues for NASA's relevance, 40 years after man first walked on the moon.