When Aranakt and Ithililoth pass extremely close to one another, the magnetic field begins to behave strangely. The metallic oxides in the air begin to congeal, forming small metallic chunks. They are blown around on the wind, creating a type of metallic hail. These chunks tend to collide with each other, forming sparks. On a planet of 82% hydrogen, this is not a good thing. The hydrogen explodes, creating massive firestorms that are rapidly blown all around the planet. Fortunatly, like its partner Ithililoth, Aranakt contains layers of nitrogen, which serves to act as a damper between the hydrogen layers, preventing the entire planet from exploding. The firestorms melt the metal pellets, and finally when the two planets get far enough apart, the storms cease altogether.
Stories of the firestorms of Aranakt are told in Valathor folklore, and some more primitive natives of Valathor still pass down their stories. It is said that Anech, the Valathorian God of Fire, and Takkai, the God of the Air, are brothers who once walked the face of Valathor. One day, they argued about something, and when they became violent, they were banished to Aranakt and Ithililoth by their father, Nalros. It is said that the planets come close to each other because the father wants to see some sport, and allows them to attack each other once every thousand years. The people of Valathor still tell tales of when their ancestors saw the great firestorms almost a thousand years ago.