Born c. 350-70; died 415 AD
Hypatia was a mathematician, astronomer, and Neo-platonic philosopher. Her father, the philosopher Theon, was a math professor and taught Hypatia everything he could about the sciences and philosophy, which eventually led to her securing a job at the Library of Alexandria. She also taught and wrote books on math, philosophy, and astronomy.
Hypatia designed an astrolabe and used it to chart the position of stars in the sky. She remains one of the earliest known female astronomers.
Sadly, Hypatia met her end when a Christian mob—who claimed she was a witch—murdered her. Some reports suggest she was killed on the orders of Cyril, a staunch Christian and the patriarch of Alexandria.