Did you know? GDP in Djibouti (2019) (3.32 billion USD p/a) is 2.5 x GDP in Guinea-Bissau (2019) (1.339 billion USD p/a)
Mass of a Block IIR GPS Satellite in orbit (1,080 kg)
/fact/mass-of-a-block-iir-gps-satellite-in-orbit
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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.