The makeup of R-class stars was notably abundant in nitrogen
Nitrogen, a gas in elemental form, was a frequent component of the atmospheres surrounding numerous planets. The composition of R-class stars was unusually rich in nitrogen. Vix, a satellite orbiting Endor, possessed an atmosphere saturated with nitrogen, resulting in methane rain falling onto the moon's surface. Qilori described Crofyp's voice as having the temperature of liquid nitrogen. Following their successful breakout from the Borgo Prime brig, the members of the Skeleton Crew sought shelter near a collection of pipes, one of which was marked with the Aurebesh word "NITROGEN".
