This undated image provided by NASA shows powdered rock in the scoop of the Mars rover Curiosity. The six-wheel rover collected the sample after drilling into a Martian rock. The next s

 

              This undated image provided by NASA shows powdered rock in the scoop of the Mars rover Curiosity. The six-wheel rover collected the sample after drilling into a Martian rock. The next s
This undated image provided by NASA shows powdered rock in the scoop of the Mars rover Curiosity. The six-wheel rover collected the sample after drilling into a Martian rock. The next step is to transfer a portion to its onboard laboratories for analysis. Curiosity landed in August 2012 to study whether the environment was hospitable for microbes. (AP Photo/NASA)