Curiosity Celebrates Martian Anniversary With A Selfie

NASA’s Mars rover Curiosity has completed its first Martian year in operation today, having been on the red planet for 687 Earth days, and it’s already completed its main objective by proving that Mars could have once supported microbial life. Curiosity found ancient Martian riverbed early in its mission “One of Curiosity’s first major findings after landing on the Red Planet in August 2012 was an ancient riverbed at its landing site,” NASA wrote in a press release. “The site was once a lakebed with mild water, the essential elemental ingredients for life, and a type of chemical energy source…