NASA Extends Mars Rover Mission a Fifth Time
not bad for rovers given an original mission survival rate of 3 months
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NASA has extended the activities of the Mars Exploration Rovers Spirit and Opportunity for a fifth time.
The twin rovers landed on Mars in January 2004 on a mission originally planned to last only 90 days. That was 45 months, or nearly four years, ago
The decision, announced today, could keep the robotic Martian explorers active through 2009.
http://www.space.com/missionlaunches...edmission.html