NASA’s Opportunity rover captured spectacular views of Mars
GOP presidential candidates begin debating in Simi Valley, Calif.; Texas Gov. Rick Perry makes his debut on the presidential debate stage.
Sept. 7, 2011Former Massachusetts governor Mitt Romney, left, and Texas Gov. Rick Perry engage during a Republican presidential candidate debate at the Ronald Reagan library in Simi Valley, Calif.Jae C. Hong/AP
NASA tried one last time to contact its record-setting Mars rover Opportunity, but declared it dead on Feb. 13, 2019, 15 years after arriving at the Red Planet. The solar-powered rover has been silent for eight months, victim of one of the most intense dust storms in decades.