For hundreds of years it was a simple fact: the Muslim world began not far south of the Pyrenees. During this time there was an influx of artists, architects and engineers from across north Africa and the Middle East. They built great mosques, libraries and palaces in...
The Dogon people knew of Saturn’s rings, Jupiter’s moons, the spiral structure of the Milky Way and the orbit of the Sirius star system. Hundreds of years ago, they plotted orbits in this system accurately through the year 1990. They knew this system contained a...