Did you know? Duration of Toltec Empire (626 y) is 10 x Length of reign of Queen Victoria of the United Kingdom (63 y)
A light year (9.46 trillion km)
/fact/a-light-year
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
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Click here for Podcast: Andrew Elliott interviewed for New Books Network.