On February 13, 2019, NASA announced that the Mars rover Opportunity was dead – an announcement that came nearly eight months after a Martian dust storm silenced the rover. NASA originally intended for Opportunity to explore the plains of Mars for only 90 days, but the incredible rover ended up working for 15 years. During its "lifetime," the rover traveled approximately the distance of a marathon, providing scientists with numerous up-close pictures of Mars and greatly increasing our knowledge about the surface and makeup of the planet.