Ellen Stofan, NASA Chief Scientist, second from right, answers a question during a panel discussion about NASA's journey to Mars and the film "The Martian," Tuesday, Sept. 29, 2015, in Grosvenor Auditorium at the National Geographic Society Headquarters in Washington. Also participating in the discussion was John Grunsfeld, associate administrator for NASA's Science Mission Directorate and former astronaut, far left, actor Chiwetel Ejiofor, second from left, director Ridley Scott, center, and James Shreeve, executive editor for science at National Geographic, far right. NASA scientists and e
Ellen Stofan, NASA Chief Scientist, second from right, answers a question during a panel discussion about NASA's journey to Mars and the film "The Martian," Tuesday, Sept. 29, 2015, in Grosvenor Auditorium at the National Geographic Society Headquarters in Washington. Also participating in the discussion was John Grunsfeld, associate administrator for NASA's Science Mission Directorate and former astronaut, far left, actor Chiwetel Ejiofor, second from left, director Ridley Scott, center, and James Shreeve, executive editor for science at National Geographic, far right. NASA scientists and engineers served as technical consultants on the film. The movie portrays a realistic view of the climate and topography of Mars, based on NASA data, and some of the challenges NASA faces as we prepare for human exploration of the Red Planet in the 2030s. Photo Credit: (NASA/Joel Kowsky)
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