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Stars in Egypt

  Those of us who have come from Britain will never have seen the summer stars as we see them here in Egypt. Back home, in the high latitudes, twilight lingers on till after 11.00 pm, a beautiful time for long conversations in the grass but useless for viewing the...

Sirius rising and the ancient Egyptian calendar

For a period of over two millennia, from the building of the Giza pyramids till the suicide of Cleopatra, the Ancient Egyptian calendar was in  continual operation, the dates of significant events recorded assiduously by a priestly bureaucracy. No other ancient...

Measuring the universe

The Babylonians were the first to measure the heavens with any reliable accuracy and pass on their data to future generations. Their continuing legacy is a system of angular measurement in which the celestial sphere is divided into 360 degrees, each degree into 60...