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aug 21, 1609 - 世界第一架望远镜展出

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世界上第一架望远镜由意大利科学家伽利略于1609年改进并公开展示，他在荷兰折射望远镜原理的基础上，将放大倍数提高到32倍，并用它观测夜空，发现了月球的山脉和陨石坑、木星的四颗卫星以及太阳黑子，证明了地球并非宇宙中心。这一展出不仅震惊了科学界，也推动了日心说的认可，成为科学革命的重要里程碑。

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aug 21, 1609

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~ 417 years ago

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