Did you know? Mass of a Block IIR GPS Satellite in orbit (1,080 kg) is 2.5 thousand x Mass of a typical (soccer) football (430 g) Tweet this comparison
Pop. of Xi'an, China (4.47 million people)
/fact/population-of-xian-china
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.