Photos: Mars rover Curiosity

NASA says <a href='http://www.cnn.com/2014/04/08/us/mars-rover-image/index.html'>the bright spot in this image</a> taken in April on Mars by the Curiosity rover could be merely a "glinting rock or cosmic-ray hit." The Curiosity rover set off from Earth in November 2011 and landed some eight and a half months later -- 99 million miles away.

NASA says the bright spot in this image taken in April on Mars by the Curiosity rover could be merely a "glinting rock or cosmic-ray hit." The Curiosity rover set off from Earth in November 2011 and landed some eight and a half months later -- 99 million miles away.