Mars Home to Ancient Lakes

New pictures released today show outcroppings on Mars that may represent sedimentary layers formed by ancient lakes, further adding to the expectation that Mars was once wet and might have harbored life. The images suggest that parts of ancient Mars may have been riddled with lakes, and that the geology of early Mars was much more dynamic than previously suspected, said the researchers who produced the images. And if life existed on Mars when these features formed, some 4.3 billion to 3.5 billion years ago, the researchers believe that fossil remnants may be sandwiched between the sedimentary rock layers, just as they are on Earth.