Did you know?
Diameter of Mercury (4,880 km) is 2.5 x Length of the Tigris River (1,950 km)
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Estimated volume of water on Titan (moon of Saturn) (18.6 sextillion L)
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.