Did you know? Time since the birth of mathematician Hypatia (1,669 y) is 5 x Time since the publication of Isaac Newton's major work, the Principia (332 y) Tweet this comparison

Estimated length of Diplodocus hallorum (longest dinosaur) (33.5 m)

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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.