In this image released on June 23, 2014, shows NASA's Curiosity Mars rover self-portrait. NASA's Curiosity Mars used the camera at the end of its arm in April and May 2014 to take dozens of component ... more 
In this image released on June 23, 2014, shows NASA's Curiosity Mars rover self-portrait. NASA's Curiosity Mars used the camera at the end of its arm in April and May 2014 to take dozens of component images combined into this self-portrait where the rover drilled into a sandstone target called "Windjana." NASA’s Mars Curiosity rover will complete a Martian year, 687 Earth days, on June 24. (AP Photo/NASA/JPL-Caltech/MSSS) less 
1 / 1
Associated Press | Photo By NASA/JPL-Caltech/MSSS
Mon, Jun 23, 2014 8:24 PM EDT