Carl Sagan explains how the ancient Greeks knew the Earth was round and calculated its circumference over 2,000 years ago.

2025-01-14 22:01

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發文後	用戶	內容
8 小時內	Kayo Tang kt625317	We know our ancestors very little.
9 小時內	Stav Hatzipantelis stav_hatzi	….. and being a Greek