火星岩石上的豹纹
(原标题: Leopard Spots on Martian Rocks)
2025-09-28
浏览次数: 1468
是什么造成了这些不寻常的斑点？去年，美国宇航局正在探索火星的毅力号火星车在火星岩石上发现了浅色斑点，每个斑点周围都有一个深色的边框。这些奇特的图案被称为豹纹，因为它们看起来与地球上著名的捕食者身上的标记相似，科学家们正在研究它们是否由古代火星生命创造的可能性。照片上的斑点直径只有几毫米，是在一块名为切亚瓦瀑布的更大的岩石上发现的。令人兴奋但未经证实的推测是，很久以前，微生物通过化学反应产生能量，将岩石从红色变成白色，同时留下一个深色的生物特征环，就像地球岩石上出现的一些类似的斑点。尽管还没有排除其他非生物学的解释，但对这种潜在的生物学起源的推测引起了很大的兴趣。
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What is creating these unusual spots? Light-colored spots on Martian rocks, each surrounded by a dark border, were discovered last year by NASA's Perseverance Rover currently exploring Mars. Dubbed leopard spots because of their seemingly similarity to markings on famous Earth-bound predators, these curious patterns are being studied with the possibility they were created by ancient Martian life. The pictured spots measure only millimeters across and were discovered on a larger rock named Cheyava Falls. The exciting but unproven speculation is that long ago, microbes generated energy with chemical reactions that turned rock from red to white while leaving a dark biosignature ring, like some similarly appearing spots on Earth rocks. Although other non-biological explanations have not been ruled out, speculation focusing on this potential biological origin is causing much intrigue.