Ancient Egyptians Discovered Algol’s Variability 3,000 Years Before Modern Astronomers

An ancient Egyptian Papyrus–the so-called Cairo Calendar–is perhaps one of the most fascinating pieces of evidence of how advanced the ancient Egyptians were in terms of Astronomy. Image Credit: OI: 10.1371/JOURNAL.PONE. Also known as the Calendar of the Days of Luck and the Unfortunate, this papyrus – which dates from 1244 – 1163 BC, assigns predictions and forecasts to every day of the Egyptian year. These forecasts indicate whether the day or part of the… Seguir leyendo