Ancient Egyptians may have chronicled the flickering of a star known as "the Demon," perhaps the earliest known record of a variable star, astronomers suggest. Subscribe to read this story ad-free Get ...
Our modern calendar is the Gregorian calendar, named for Pope Gregory XIII, who reformed it in 1582 to correct some errors in the older Julian calendar. The Julian calendar was named for Julius Caesar ...
Introduction: under ancient Egyptian skies / Mosalam Shaltout & Juan Antonio Belmonte -- The historical background / Magdi Fekri -- Astronomical historiography in four movements / Miguel Ángel ...
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