Birdwatch Note Rating
2023-07-16 01:34:09 UTC - HELPFUL
Rated by Participant: 5D7231E5C28DFDF9879C29E643B506500DD15CB6448DA9BE4FD8097698661BD0
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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