Lords of Creation: Ancients of the Void
When Attraxxii died his moons floated throughout The Void, cold and lifeless, only the Red Moon continuing to do anything.
That is, until Artoran decided to honor his worshipers below by taking them apart piece by piece. He flew about, smashing the moons into bits with Drinker, sparing only the Red Moon for the gift it grants his worshipers below.
And so what were once many moons orbiting the plane below is now a massive belt of asteroids and other debris, empty and cold, although hopefully not for long.