Eratosthenes 5th Century BCE.
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There are wonderful pictures from space of earth. In them you can see it is round. The Ancient Greeks knew it was round.
Socrates lived in ancient Greece and did not specifically address the shape of the Earth in his writings. The idea that the Earth is round was proposed by other ancient thinkers such as Pythagoras and Aristotle.
The round shape of the Earth was discovered by the ancient Greeks around 500 B.C. The first proposal about the Earth's shape was from Pythagoras.
Yes. Contrary to popular belief, by the time of Copernicus scholars knew Earth to be round.
round body and moved around the Sun