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美宇航局官员：被冰层覆盖 地外文明或在外星水底
source link: http://tech.sina.com.cn/d/s/2017-10-23/doc-ifymzqpq3385779.shtml
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中新网10月23日电据外媒报道，美国宇航局的“新视野号”太空船探测任务负责人斯特恩近日表示，人类直到现在还没有与地外文明建立接触，原因就是这些可能会有潜在生命的星球，是由水世界组成。据报道，斯特恩日前在美国普罗沃举行的年度行星飞行大会上称，
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