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Unverified50% confidenceFactExact time

费米悖论由物理学家恩里科·费米于1950年提出,核心问题是如果银河系存在大量潜在外星文明,为什么至今没有观测到它们的任何迹象

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50%
Confidence
Long-term
Relevance
8/27/2026
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