Birdwatch Note Rating
2023-07-15 19:52:47 UTC - HELPFUL
Rated by Participant: ED29687F1CCFD70A42094EE0EDF4DC6C7490A9805F0099B1A942DD402BC40C59
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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