Did you know? Height of the `One World Trade Center` skyscraper in New York City (541 m) is 200 x Height of an ostrich (2.7 m)
A parsec (31 trillion km)
/fact/a-parsec
Link
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.
