>It's actually not doing either; that's Sozin's Comet, it's passing
>through the outer stratosphere many miles above the camera.
>
>(Yes, I know comets don't do that. I have to work with what the show
>gives me. :)
Well, it makes sense if Sozin's Comet is actually a spirit. And if the moon is Yue, why can't the comet be a spirit too?

(Hmm, it being on fire all the time does complicate my plan to land on it, but I'm pretty sure something can be worked out.)