Postulate: Ball Lightning and Black Holes are the same phenomena.
2e; The vacuum is a Tetrahedral Flux Tube Lattice of oscillating Axion Particles between Nodes at variable Planck distances, inside local vacuum bubbles around stars and black holes, with -different lightspeed. (light bending around masses)
See also lightspeed reduction in water by vacuum node distance decrease.
see: Primordial Black Holes and Dual Herbig Haro Effects for Star-Galaxy Formation. https://vixra.org/pdf/2101.0158v1.pdf