general
/go/science-earth-circumfrence-greek
How ancient Greeks knew the Earth was round and calculated it's circumference over 2,000 years ago.
Open URL ↗
https://x.com/ProfCarlSagan/status/2095346448766550295?s=20
Full text
How ancient Greeks knew the Earth was round and calculated it's circumference over 2,000 years ago.
Science