Curiosity rover reaches its 3,000th day on Mars

As the rover has continued to ascend Mount Sharp, it's found distinctive benchlike rock formations. It's been 3,000 Martian days, or sols, since Curiosity touched down on Mars on Aug. 6, 2012, and the rover keeps making new discoveries during its gradual climb up Mount Sharp, the 3-mile-tall (5-kilometer-tall) mountain it has been exploring since 2014. Geologists were intrigued to see a...