Hipparchus was one of the first mathematicians who trigonometrically defined his astronomical observations through stereographic projection, which is incredibly awe-inspiring! To read the podcast's transcripts and to see a visual description of stereographic projection, please visit me at www.MathScienceHistory.com.

For Math! Science! History! merch, visit https://www.mathsciencehistory.store/

To buy my book Hypatia: The Sum of Her Life on Amazon, visit https://a.co/d/g3OuP9h

Until next time, carpe diem!

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