Unlike Earth that has only one moon, Cybertron has two moons. One is much larger than the other one. They are present in the skies on Cybertron during night or afternoon. Airachnid was sent on one of the moons by Soundwave where she sucks out the energon from her Insecticon army. One also emits light of its own. It is unknown what happened on the moons before and after the restoration of Cybertron.