NASA has once again extended the operations of Mars Exploration Rovers, Spirit and Opportunity. This makes it the 5th time their retirement has been cut short. It is possible that they could continue exploring to 2009. Both rovers have found evidence to support the existence of water at one time on Mars. At this point Opportunity has traveled 11.57 miles and Spirit 4.51 miles. They have take thousands of photos and collected much information to add to the research of Mars. They have been at it for over three and a half years and while they show some signs of wear, they are still trekking along.
http://www.spacedaily.com/reports/NASA_Extends_Operations_For_Its_Long_Lived_Mars_Rovers_999.html
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