Did you know?
Mass of an adult male red kangaroo (85 kg) is 500 x Mass of an iPhone 6 (170 g)
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Mass of Juliet (moon of Uranus) (560 quadrillion kg)
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.