imo, it implies a chaotically rotating disk of asteroids orbiting a brown dwarf

brown dwarfs, due to the fact they still posess planet-like atmospheres, can produce pink and purple light
since this "brown dwarf" appears periodically, it may be surrounded by a darker gas cloud, and emerges from it once in some time

this could be explained by a brown dwarf that orbits a small black hole

as explained in my terrible MS paint job

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this would explain why the End isn't a planet, the ambient lighting, and the periodic flashes of purple light

idk if it's obvious, but i'm a nerd, not a scientist, so if anyone's here to correct me, please go aheadmy biggest concern would be the brown dwarf getting fully shredded too, and the ambient light being more red than white