NASA's Curiosity rover has recently found rippled rock textures that suggest lakes existed in a region of ancient Mars. Scientists had expected the region to be drier.
has recently discovered rippled rock textures that suggest lakes existed in a region of ancient Mars that scientists had expected to be drier.
However, when the rover arrived there last fall, the team was surprised to find the"clearest evidence yet of ancient water ripples that formed within lakes." Billions of years ago, NASA said, waves on the surface of a shallow lake stirred up sediment at the bottom,Climbing nearly half a mile above the base of Mount Sharp, the rover found the textures preserved in the"Marker Band," which is a thin layer of dark rock that stands out from the rest of the mountain. The rock layer is so hard that Curiosity has not been able to drill a sample from it after several attempts, and scientists will be looking for softer rock in coming weeks.
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