To be sure, Opportunity has dealt with the pains of aging. One of its six wheels doesn't turn as well as it did, one science instrument (a spectrometer called Mini-TES) has shut down, and the rover has been driving with its robotic arm stretched out a bit because of joint issues, Arvidson said.
Even so, the rover continues to plod along and seems ready for the years ahead at Endeavour.
"All in all, I would like to be that healthy after that number of rover years on Mars," Arvidson said.
• The Best (And Worst) Mars Landings in History
• Opportunity Nears Endeavor Crater - 7 Years and Still Roving
• Photos: Gale Crater on Mars, Curiosity Rover's Landing Site
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