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.
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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