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Mass of an adult male African Elephant (5,350 kg) is 50 x Mass of Vespa Primavera 50 scooter (108 kg)
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Mass of Comet 67P, Rosetta's Comet (10 trillion kg)
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.