Did you know? Direct distance from Land's End to John o' Groats (970 km) is 2 thousand x World record longest flight of an arrow from a bow (2010) (484 m)
Mass of Janus (moon of Saturn) (1.9 quintillion kg)
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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.