The Federation maintained a Q-Base on Fosforon.
Fosforon had a high oxygen content atmosphere, making fire a particular hazard the Federation's Q-Base.
Blake visited the planet to acquire a TP crystal from the Federation's Q-Base.
A plague carried on Wanderer K47 designed to kill any human who had suffered the Terran Ague broke loose on Fosforon and killed everyone there. Blake put out a plague warning transmitter, despite Servalan's imminent arrival. (B: Killer)