最新火星高清照片 “指纹”地形引关注(组图)(1)
英国每日邮报报道,日前,美国宇航局最新公布了一批高清火星表面图片,科学家认为这些火星丘陵地形能够揭示火星过去数百万年前所发生的气候变化。
图1:具有指纹特征的科普莱特斯地区
如图1所示,这是科普莱特斯地区,是水手峡谷的一个大型水槽地形,水手峡谷是沿着火星赤道延伸数千英里的峡谷。图中发白的区域叫做蒸发岩(evaporites),这是盐水蒸发消失后残留下来的矿石沉淀物,看上去很像人类指纹,这样的沉积物引起了科学家们的浓厚兴趣,他们认为这可以作为远古火星生命潜在生存的迹象。
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