Did you know? Mass of space debris in orbit around Earth (5.5 million kg) is 500 x Mass of the Hubble Space Telescope (11,110 kg)
Pop. of Madrid, Spain (3.21 million people)
/fact/population-of-madrid-spain
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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.