New images shed light on Mars? watery past

New images show traces of a once very-wet Mars with different ages and stages of water-influenced geology, findings that could determine where Mars rovers land to look for traces of life.

“When clays settle out in a wet environment, it can preserve any organic material that might have existed in the water,” said Scott Murchie, a principal investigator with Johns Hopkins? Applied Physics Laboratory in Laurel which released the findings.