Air and Space Museum Apollo 40th Celebration

NASA Astronaut and Expedition 19 Flight Engineer Michael Barratt delivers remarks and shows a moon rock sample being flown onboard the International Space Station at the Apollo 40th anniversary celebration held at the National Air and Space Museum, Monday, July 20, 2009 in Washington. Photo Credit: (NASA/Bill Ingalls)

NASA Astronaut and Expedition 19 Flight Engineer Michael Barratt delivers remarks and shows a moon rock sample being flown onboard the International Space Station at the Apollo 40th anniversary celebration held at the National Air and Space Museum, Monday, July 20, 2009 in Washington. Photo Credit: (NASA/Bill Ingalls)

Photographer NASA/Bill Ingalls
Apollo 40th AnniversaryMichael BarrattNational Air and Space Museum NASM Expedition 19 OnboardNeil deGrasse TysonInternational Space Station ISS