NASA's Curiosity rover has snapped black and white images of a rock on the Martian surface that looks remarkably like a piece of coral.
The Curiosity rover discovered what looks like coral on Mars.
NASA's Curiosity rover has sent back intriguing images of what looks like a piece of coral on Mars .
The strange object is in fact a small, light-colored, wind-eroded rock, which the rover... [2274 chars]