Birdwatch Note Rating
2023-07-16 17:46:47 UTC - HELPFUL
Rated by Participant: 9E3BDBF286D82D7BF584D1765A868A53D93B7E1869675EEE4F3560A129130942
Participant Details
Original Note:
Ancient Greeks in the Hellenistic period knew the earth was round thanks to Pythagoras in 500bc and Aristotle (350bc). This was prior to Eratosthenes’ experiments at Alexandria and Syene (230bc). The experiment was only used to measure the earth’s circumference. https://starchild.gsfc.nasa.gov/docs/StarChild/questions/question54.html https://www.loc.gov/collections/finding-our-place-in-the-cosmos-with-carl-sagan/articles-and-essays/modeling-the-cosmos/ancient-greek-astronomy-and-cosmology#:~:text=During%20a%20lunar%20eclipse%2C%20when,the%20Earth%20is%20a%20sphere.
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