Gremar

Gremar is the fourth planet in the system.

Description
Gremar is an icy terrestrial with a thin atmosphere of carbon dioxide and krypton. It's surface is mainly composed of frozen ammonia with deposits of tin and other light metals.

When exposed to sunlight, Gremar's ammonia can melt, forming equatorial seas of the toxic chemical. This allowed a profusion of simple fungus and lichens to evolve in the low-energy environment. A by-product of their metabolism causes them to glow very faintly. While the light of an individual is insignificant, large patches seem to reinforce the light of the light of one another, and are visible from space.