Eratosthenes — "There are five planets, and they all orbit the sun."
There are five planets, and they all orbit the sun.
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"One must observe the world carefully to understand its secrets."
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Details
While he accepted a geocentric model, some sources suggest he was aware of heliocentric ideas and contributed to understanding planetary motions, but this specific quote is not directly attested.
Date: c. 250 BCE
Nature & WorldVerification
Unverifiable
Found in 1 providers: grok
1 source checked