USA-SCIENCE-Mars Rover Curiosity Update Press Conference

(L-R) Nasa's, Michael Meyer, Program Scientist for Mars Science Laboratory, Ken Edgett, Principal Investigator for Curiosity's Mars Hand Lens Imager, Ralf Gellert, Principal Investigator for Curiosity's Alpha Particle X-Ray Spectrometer, Nasa's Paul Mahaffy, Principal Investigator for Curiosity's Sample Analysis at Mars and John Grotzinger, Project Scientist for Mars Science Laboratory; California Institute of Technology, comment during the Mars Curiosity update press conference in San Francisc (Photo by Kim Kulish/Corbis via Getty Images)