NASA Reveals Closer Image of White Mars Rock "Tintina"
Description:Although Mars is known as the red planet, the National Aeronautics and Space Administration’s Mars Curiosity Rover has found a white rock with signs that water existed on Mars in the ancient past. The rock, now dubbed Tintina, broke when it was run over by Curiosity. It revealed a bright white color due to the presence of water-bearing minerals long ago. (1:00)