Curiosity (rover) conditions favorable for microbial life, including investigation of the role of water; and planetary habitability studies in preparation for human exploration. In December 2012, "Curiosity" two-year mission was extended indefinitely. On August 5, 2017, NASA celebrated the fifth anniversary of the "Curiosity" rover landing and related exploratory accomplishments on the planet Mars. The rover is still operational, and as of , "Curiosity" has been on Mars for sols ( total days) since landing on August 6, 2012. "(See current status.)" "Curiosity" design will serve as the basis for the planned Mars 2020 rover. As established by the Mars Exploration Program,
Mars Exploration Rover Reddit that appeared to depict a human penis carved into the Martian dirt. On May 16, 2013, NASA announced that "Opportunity" had driven further than any other NASA vehicle on a world other than Earth. After "Opportunity's" total odometry went over , the rover surpassed the total distance driven by the Apollo 17 Lunar Roving Vehicle. On July 28, 2014, NASA announced that "Opportunity" had driven further than any other vehicle on a world other than Earth. "Opportunity" covered over , surpassing the total distance of driven by the Lunokhod 2 lunar rover, the previous record-holder. On March 23, 2015,