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Mars Science Lab

In this handout image provided by NASA, the Mars Science Laboratory (MSL) team clap and welcome White House Science and Technology Advisor John Holdren (3rd L), as he stops by to meet the landing team and to say 'Go Curiosity' as NASA Administrator Charles Bolden (2nd L) and Jet Propulsion Laboratory Director Charles Elachi (L) look on, August 5, 2012 at JPL in Pasadena, California. Bill Ingalls/NASA via Getty Images
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