The moons are supposed to be the remains of Lorkhans divine body (according to the Lunar Lorkhan theory), and represent his duality, that much I know, and also their significance in Khajiit myth.
But I'm looking for more info on them. What aspects of Lorkhan exactly represents each of them? Are there other theories regarding their nature?
Would be nice if someone could point me towards some texts on that matter.