Did you know? Mass of Callisto (moon of Jupiter) (107.6 sextillion kg) is 4 thousand x Mass of Nereid (moon of Neptune) (27 quintillion kg)
Land Area of Romania (229,900 km^2)
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.