PASADENA, Calif., April 5 (UPI) -- NASA officials said Tuesday they approved up to 18 more months of operations for Spirit and Opportunity, the twin Mars rovers.
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Mars scientists Doug McCuistion, Alfred McEwen, Steve Squyers and Jim Bell participate in a news conference announcing new photos made during the exploration of Victoria Crater on Mars at NASA headquarters in Washington on October 6, 2006. (UPI Photo/Roger L. Wollenberg)
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