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The lower part of the astronomical clock in Prague and two of the figures that come out during the show that takes place every hour between nine in the morning and nine in the evening. Photo: shutterstock

The astronomy behind the Astronomical Clock in Prague, which began operating 605 years ago today

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Diagram of the Antikythera mechanism

Antikythera mechanism: the computer is two thousand years old this year, and why the industrial revolution didn't start in ancient Greece

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Clockwork from the Museum of Life in Burgundy, France. Courtesy of Wikipedia

See you in ten thousand years

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This year will be long in one second

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The last minute of 2005 will last 61 seconds

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