New discoveries on Mars reveal deep, round openings. These features are unlike known craters or volcanic pits. Scientists believe water may have shaped these cavities long ago. Such underground spaces could have protected ancient life from harsh surface conditions. These caves offer a new focus for future exploration and the search for signs of life on the Red Planet.from Science News: Fresh Discoveries, Research & Breakthroughs https://ift.tt/6C2SfzP
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