The series premiered on demand on November 23, 2015, and on Syfy on December 14, 2015. A 13-episode second season premiered on February 1, 2017. In March 2017, Syfy renewed The Expanse for a 13-episode third season to air in 2018.
Perlite is an amorphous volcanic glass that has a relatively high water content, typically formed by the hydration of obsidian.
Sodalite is a highly fluorescent mineral. This means that if you have an ultraviolet light (a black light/ the light that is used for glow-in-the-dark mini putt) and you shine the light on a piece of sodalite then it will glow! Sodalite.