Did you know? Mass of SpaceX Falcon 9 launch rocket (542,000 kg) is 500 x Mass of a Block IIR GPS Satellite in orbit (1,080 kg)
Length of the Blue Whale skeleton in London's Natural History Museum (25.2 m)
/fact/length-of-the-blue-whale-skeleton-in-londons-natural-history-museum
Link
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.