Did you know? Mass of the Earth (5.97 septillion kg) is 40 x Mass of Ganymede (moon of Jupiter) (148.2 sextillion kg)
Length of a tennis court (23.77 m)
/fact/length-of-a-tennis-court
Link
If this was a standard unit ...
"This is a fun and riveting book. Written in an accessible and engaging way, it is unputdownable." Frost Magazine
Click here to learn more about it.
Click here for Podcast: Andrew Elliott interviewed for New Books Network.