推荐Terry Tao 的解释，地球是球可以从观测月球推出。好像中国古代很早就认识到这点，才有了所谓浑天仪。

来源: JSL2023 于 2025-08-06 08:04:20 [旧帖] [给我悄悄话] 本文已被阅读：次

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