Birdwatch Note Rating
2023-07-17 16:07:30 UTC - HELPFUL
Rated by Participant: 0AB12828AEBBED729D219E7F7E6A3BA2D36ADEAA4C8097AD16F22EC17DAAEA52
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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