New Day for Longest-Working Mars Rover “NASA’s Mars Exploration Rover Opportunity recorded the dawn of the rover’s 4,999th Martian day, or sol, with its Panoramic Camera (Pancam) on Feb. 15, 2018, yielding this processed, approximately true-color scene.” 5,000 Days on Mars For Mars Rover Opportunity “The Sun will rise on NASA’s solar-powered Mars rover Opportunity for the 5,000th time on Saturday, sending rays of energy to a golf-cart-size robotic field […]