Part 5/12:
Northern and Southern Lights: The concept that a black sun causes both Aurora Borealis (north) and Aurora Australis (south) raises issues. If the black sun causes northern lights constantly, why are these lights only seen in specific regions and times? The model doesn't address the mechanism behind the Southern Lights, especially if the black sun's activity is supposedly responsible.
Moon Phases: The idea that the black sun alone causes the moon's phases doesn't hold up. The moon's phases depend on its position relative to the Sun and Earth, with well-understood angular sizes and illumination patterns inconsistent with a nearby black sun.