In Mistborn, you say its planet is called Scadriel. In-universe, where (or when) did the name Scadriel come to be used to be describe the Mistborn planet? Did the Lord Ruler and his obligators use that as the name of the planet, or did it come later, post-Mistborn 3? Or is “Scadriel” just what you as an author use to refer to it?
It is “In Universe” so to speak, though the name itself isn’t known to the people on-planet. The Lord Ruler was the only one who understood the exact nature of a planet, really, though some of the obligators and noble scholars had a general idea. Astronomy was one of the scientific areas where the Lord Ruler didn’t mind people doing research, so long as it kept their interest away from chemistry or a science that could lead to advances in weaponry.
Scadrial would then have been the name that Ruin and Preservation understood for the planet, as well as certain other groups and individuals of a less directly divine nature.
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