Hypatia was a Greek mathematician, philosopher and astronomer born in Egypt, then part of the Byzantine empire. She’s credited with inventing the astrolabe – a brass instrument used to ...

These are the events and people that shaped the history of travel, from early pilgrimages and the Age of Discovery, to the advent of air travel and modern space exploration.

One of the few women in Ancient Greek academe, Hypatia of Alexandria was a renowned philosopher and mathematician — and she was killed because of it. People primarily remember Hypatia of Alexandria, ...