I'm filling out the description of the Falling Star religion, which has been on the to-do list for just about forever:
Sometime either during or just after the Apocalypse, the faith of the Falling Star believe a star fell from the heavens and onto Earth. This star was a fallen angel, who had sacrificed themselves to save mankind from God’s wrath, explaining humanity’s survival. Practitioners of the Falling Star faith are generally viewed with suspicion by those with more traditional Christian beliefs, as the concept of fallen angels are generally thought of as evil, and associated with Satan. However, the Falling Star faith insist their angel has little in common with the fallen angel Lucifer, and that their angel’s compassion reawakened God’s mercy in a moment of anger. Thus, members of the Fallen Star still fall under the Christian banner, albeit with a theology that features great devotion to their fallen “star”.
The star, in actuality, was one of Earth's space stations falling out of the atmosphere, perhaps with the Skeleton of an Astronaut inside. This formed the basis of the faith. However, I don't think I'll be able to fit that into the description, but I think we might try and get it into Falling Star flavour if we can.
The Falling Star faith borrows from the Yazidi faith is some respects.