Eratosthenes:

I have cataloged the stars, and their movements reveal the cosmic order.

— Eratosthenes Ancient

Calculated Earth's circumference

His work in astronomy, including a lost star catalog.

c. 240 BCE

Verification

Unverifiable

Found in 1 providers: grok

Cross Reference

1 source

"The map of the world should reflect the true dimensions of the Earth."

"The library at Alexandria is the greatest treasure in the world."

"The Nile flows from the south, from unknown sources."

"I am a 'philologos,' a lover of learning."

"The Sun is so far away that its rays are parallel when they reach Earth."