What ancient Greek philosopher led to the conclusion that the earth should have the shape of a ball?

Back in the 4th century BC. Aristotle, the ancient Greek philosopher, came to the conclusion that the earth must have the shape of a ball. To come to this conclusion, he conducted various observations, the most significant of which was the observation of lunar eclipses. He noticed that during eclipses, the shadow of the Earth on the Moon is always round. Based on this, he concluded that the Earth has the shape of a ball.



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