Did you know?
Age of the Earth (4.54 billion y) is 20 x Galactic Year (period of rotation of the Milky Way galaxy) (225 million y)
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Pop. of Seoul, South Korea (10.05 million people)
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.