Did you know? Mass of Janus (moon of Saturn) (1.9 quintillion kg) is 100 x Mass of water in Lake Tanganyika (Africa) (18.9 quadrillion kg) Tweet this comparison

Time since the birth of Euclid (2,382 y)

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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.