I can get on board with that. Both physics and the Tibetan Book of the Dead tell us that energy can neither be created nor destroyed. So no matter how terrifying the demons of the Bardo might be, nor how demoralizing and unbelievable it is that we've seen the magic of both Ziggy Stardust and Severus Snape disappear in one fell swoop--nothing ever really disappears. It just changes form, and goes on forever.
Goodnight, sweet princes. We will keep watching the stars, in case of any stray glitter, or a spark from a wand, or a random strain of Space Oddity beamed back from a distant nebula. Because if you taught us anything, it's that possibility is infinite.