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Reposted
Carl Sagan explains how the ancient Greeks knew the Earth was round and calculated its circumference over 2,000 years ago.
April 20, 2025 at 5:00 PM
Carl Sagan explains how the ancient Greeks knew the Earth was round and calculated its circumference over 2,000 years ago.
Reposted
European Space Agency
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March 13, 2025 at 8:52 PM
European Space Agency
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