CNN:
They had returned 250,000 images, covered more than 21 kilometers (13 miles), climbed a mountain, descended into craters, struggled with sand traps and ageing hardware and survived dust storms, NASA said.
“These rovers are incredibly resilient considering the extreme environment the hardware experiences every day,” said John Callas, Jet Propulsion Laboratory project manager for Spirit and Opportunity.
“We realize that a major rover component on either vehicle could fail at any time and end a mission with no advance notice, but on the other hand, we could accomplish the equivalent duration of four more prime missions on each rover in the year ahead.”
Simply amazing that those little guys are still rolling around collecting information. Probably the most impressive hardware out of NASA in 20 years.