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火星表面化合物或有剧毒 人类移民火星梦或破碎

2017-07-09 05:08:44   央视新闻

一直以来,“火星”都是各国航天机构的研究重点之一,人类一直抱有“移民火星”的愿望。

近日,德国航天局的科学家在欧洲最活跃的火山测试了一款太空机器人,准备用于未来探测火星。

漫步“火星”——德测试火星机器人

在意大利西西里岛的埃特纳火山口中,科学家们正在测试一款高0.9米的四轮机器人,由于火山口地表荒凉并且干燥多风,科学家认为这里是模拟火星表面的最佳地点。

测试这款机器人的目的是希望它未来能够在极端的太空环境中,比如火星上完成运输、安装仪器等任务。目前,测试还在初级阶段。

火星表面或有“毒”

不过,英国《自然》杂志旗下的《科学报告》近日刊登一篇科学论文指出,火星表面存在名为高氯酸盐的化合物,而高氯酸盐在与火星表面情况相似的短波UV射线的照射下,会产生杀菌性,由此推断,火星表面可能对生物细胞有剧毒。

△火星表面模拟动画

此外,火星表面的另两种成分氧化铁和过氧化氢,在与高氯酸盐的共同作用下,杀死细胞的能力比起单纯的高氯酸盐提高了10.8倍。


虽然人们怀疑火星表面存在毒性已经有一段时间了,但是一直缺乏重要证据。此次发现证明了火星表面对细胞有剧毒。这一结论让科学家对火星的“宜居性”提出了质疑。

责任编辑:高宗影 CN060
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