'Now Curiosity is there: It’s time to do some science'

California Gov. Jerry Brown, right, tours NASA's Mars Curiosity test rover called the Vehicle System Test Bed, or VSTB, at the In-Situ Instrument Laboratory room at the Jet Propulsion Laboratory in Pasadena, Calif., Wednesday, Aug. 22, 2012. From left: Jean-Lou Chameau, President of California Institute of Technology, Caltech and Peter Theisinger, MSL project manger, NASA JPL, Pasadena. (AP Photo/Damian Dovarganes, Pool)