Director of the Hayden Planetarium Neil deGrasse Tyson speaks as host of the Apollo 40th anniversary celebration held at the National Air and Space Museum, Monday, July 20, 2009 in Washington. Photo Credit: (NASA/Carla Cioffi)
Director of the Hayden Planetarium Neil deGrasse Tyson speaks as host of the Apollo 40th anniversary celebration held at the National Air and Space Museum, Monday, July 20, 2009 in Washington. Photo Credit: (NASA/Carla Cioffi)