Board Thread:Speculation House/@comment-14138255-20140822003454/@comment-14909251-20140822031230

This basically just gives us hardened details on Dust and a bit of ominous foreshadowing towards the end that I have no doubt is followed by our "Mysterious Narrator" letting out some sort of evil laugh (not in the episode itself, but just in my head). A few things we do get are hints that Dust's origins are in some way significant to the plot due to the mysterious nature of how it appeared. I am personally going to go with Dust being somehow derived from people or derived for people, either the people of Remnant or some previous people. The moon connection is possible, but it is heavily implied that the moon broke recently, after the discovery of Dust. It does not mean Dust did not come from space, though if it were arriving regularly from space you would think its origins would not be presented as so mysterious.