Science: First Date?

Astounding to Egyptologists, and not entirely convincing, was a story which last week rode the press wires out of Pittsburgh. The story: a 34-year-old University of Pittsburgh professor named Jotham Johnson had fixed the date when the ancient Egyptian calendar began. Sensationally simple was the Johnson voyage of discovery: he had had a Zeiss planetarium projector turned "back through time" to show the position of the stars and the phase of the moon on his chosen date.

After collating various scraps of evidence, he decided that June 18, 3251 B. C. was the likeliest date. Ancient Egyptian records indicate that on the...

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