The Mars rover Curiosity continues to turn up amazing finds on the red planet. This time NASA says it’s found evidence of an ancient lake. How? They base that on the way the rock is laying. “The cross-bedding — evident as layers at angles to each other — reflects formation and passage of waves of sand, one on top of the other. These are known as ripples, or dunes,” wrote a NASA official.
Click the link and check out the fascinating images.