I first encountered the word “Thule” in college while pouring over beyond-old world maps in class. I thought nothing of it for the next few years until I stumbled across the word again, this time in ...

Ultima Thule is no more. The remote solar system body visited in January by NASA’s New Horizons spacecraft now has a proper name: Arrokoth. The word means “sky” in the language of the Powhatan people, ...