CALIFORNIA, UNITED STATES - OCTOBER 14: Visitors are seen during the open house of NASA's Jet Propulsion Laboratory, the event themed Welcome to Our Universe, take visitors on a ride through the wonders of space in Pasadena, California United States on October 14, 2014. Highlights include JPLs machine shop, where robotic spacecraft parts are built, a life-size model of Mars Science Laboratory.  (Phot by Mintaha Neslihan Eroglu / Anadolu Agency / Getty Images)