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Time since the birth of Alexander the Great (2,374 y) is 5 x Time since the publication of Copernicus's sun-centred model of the solar system (476 y)
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Diameter of a UK 1p coin (20.3 mm)
If this was a standard unit ...
Yes, there's now a book based on these numbers. Oxford University Press: July 2018.
Click here to learn more about it.
Click here for Podcast: Andrew Elliott interviewed for New Books Network.