While the new, Mars Rover Curiosity is on everyone’s mind, Opportunity and Spirit Rovers have been on Mars since January of 2004. Spirit’s mission was ended in May of last year after being stuck in sand for about a year. Opportunity is still operational. Curiosity is more sophisticated than Opportunity and Spirit, but these two provided many new Martian mysteries to be solved. NASA’s website has some of the pictures that Opportunity has taken that are full of wonder for us Earth bound. You can see them here, and here and here.
The Mission Team for Opportunity and Spirit Rovers are to be awarded the Haley Space Flight Award. At launch the targeted operational life of these two rovers, on Mars, was estimated at 90 days.