John Grunsfeld, Charles Elachi, Pete Theisinger, Richard Cook, Adam Steltzner, John Grotzinger

Mars Science Laboratory Curiosity members from left: John Grunsfeld, NASA associate administrator, Charles Elachi, director, JPL, Pete Theisinger, MSL project manager, Richard Cook, MSL deputy project manager, Adam Steltzner, MSL entry, descent and landing (EDL) lead and John Grotzinger, MSL project scientist, California Institute of Technology, from the Mars Science Laboratory (MSL) Curiosity Rover mission team raise their arms celebrate the landing of Curiosity rover on the surface of Mars at NASA's Jet Propulsion Laboratory in Pasadena, Calif., Sunday, Aug. 5, 2012. (AP Photo/Damian Dovarganes)