Did you know?
Height of Cologne Cathedral spires, Germany (157 m) is 1 thousand x Length of an iPhone 6 (158.1 mm)
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Diameter of Neptune (49,200 km)
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.