The Mars Rover Opportunity’s mission is now officially over. On June 10, 2018, a massive dust storm on Mars prevented the rover from getting enough sunlight to keep its batteries charged. After many attempts to revive the rover, NASA has finally closed its mission. It was launched in 2003 and was expected to have a surface mission life of only 90 days. A testament to NASA’s engineering, it operated for almost 15 years and traversed 28.06 miles.