Realistic Demon Hunting?

As WhiteRaven suggests, Celestial entities is an old term. No need for apologies. Most people here don't use it, but that doesn't necessarily mean it is incorrect.

Agrippa, as was used as an example, illustrates to us that the celestial bodies were believed to coalesce in a sort of sentience, or as an entity of sorts. Thus the influence that they are believed to have over life.

I can also see how the term might be applied to Angels and more complex spirits, even demons, as many of them can be considered higher spirits. And what is "higher" than the celestial? Plus there is the concept of the celestial court that stems from Asia, describing various spiritual entities.

The Warrens are definitely interesting folks. They encountered a great deal, but I think that much of it was likely unnecessarily agitated or hyped up through their background in Judeo-Christian Demonology. Too often, from their point of view, if it's not God it's a demon, and therefore must be approached aggressively. Poke much about anything with a sharp stick and it's going to poke back.

All of this being said, well, I don't much discuss such things openly here. As was said, the children (and adults) tend to take such information and run with it in absurd directions.