Mars Rock Honeycombs Hint at Ancient Wet-Dry Cycles
NASA's Curiosity rover at Antofagasta crater on Mars has found thousands of honeycomb-like polygonal patterns in rocks. The texture resembles desiccation cracks seen on Earth and is compared with hexagonal patterns at Pontours, suggesting ancient wet-dry climate cycles on Mars; researchers caution it's too early to confirm a single cause and will analyze more data to distinguish possible formation mechanisms.