Did you know? Time since the start of the Iron Age (3,200 y) is 40 x Time since introduction of the first mass-produced helicopter (Sikorsky R-4) (80 y)
Mass of Ariel (moon of Uranus) (1.353 sextillion kg)
/fact/mass-of-ariel-moon-of-uranus
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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.