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当前位置:科技 > 科学博览 > 宇宙天文 > 正文
最新火星高清照片 “指纹”地形引关注(组图)(4)
2009-09-07 08:22:52 中华网论坛 发表评论
    

最新火星高清照片 “指纹”地形引关注(组图)

图4:充满山谷的地形暗示着远古火星曾存在河流

    在地球上类似这样的地形都被认为是由于液态水冲积形成的,科学家长期以来认为这样的地形很少存在于火星表面。目前,行星科学家正在仔细研究这些沟渠地形,从而检测此类地形在现今寒冷干燥状态下是否会形成和发生变化。



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