Historical Organization
Wired
The article uses the 2017 total solar eclipse to show how orbital models, geometry and precise timekeeping predict a moving shadow.
Babylonian, Chinese, Indian, Islamic and European observers developed records and methods later joined to modern celestial mechanics.
Small uncertainties in the Moon's orbit, Earth's rotation and observer location affect the calculated path of totality.
The publication date anchors a story whose mathematical sources extend far beyond one nation or period.
