NASA Chief Bolden Speaks At A House Science Committee...

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White House Office of Science and Technology Policy Director John... News PhotoAstronomy,Court Hearing,Emergencies and Disasters,Emergency Planning,Law,Politics,Rayburn House Office Building,Science and Technology,Space Mission,Testimony,USA,Vertical,Washington DCPhotographer Collection: Getty Images News 2013 Getty ImagesWASHINGTON, DC - MARCH 19: White House Office of Science and Technology Policy Director John Holdren testifies before the House Science, Space and Technology Committee during a hearing in the Rayburn House Office Building on Capitol Hill March 19, 2013 in Washington, DC. The committee asked government and military experts about efforts to track and mitigate asteroids, meteors and other 'near-Earth objects.' (Photo by Chip Somodevilla/Getty Images)