Meyer, Grotzinger, Hassler, and Malin discuss during news conference at NASA's Jet Propulsion Lab in...
Michael Meyer (L-R), lead scientist of NASA's Mars Exploration Program, John Grotzinger, Mars Science Laboratory project scientist, California Institute of Technology, Don Hassler, principal investigator, Radiation Assessment Detector on MSL, Southwest Research Institute and Michael Malin, principal investigator, Mars Descent Imager on MSL, Malin Space Science Systems discuss during a news conference at NASA's Jet Propulsion Lab in Pasadena, Calfiornia August 2, 2012. A graphic of the MSL Curiousity rover is shown in the background. The rover is set to land in the late evening of August 5, 2012. REUTERS/Fred Prouser (UNITED STATES - Tags: SCIENCE TECHNOLOGY)