Mars rovers still working

Four years after starting their 90 day missions on Mars, rovers Spirit and Opportunity are still going strong. Together they have ranged over 10 miles and have taken over 200,000 images of the Martian surface.

They have done a lot of good science, including supporting theories about water having once been on the surface Mars. With the onset of the Martian winter the rovers are now parked and awaiting spring before continuing their record breaking activities. Let's wish them a long life so they may welcome ESA's ExoMars rover in 2014.