vfx for a video in progress

Center of the sun looks brighter than the edges?

I hope it is to educate us about the odd fact that sun "spots" are actually glowing super hot, but we see them as "spots" only because the light flux surrounding is much higher. In other words, if a sun spot were on its own in space, it would glow brighter than a comet. But we see them as "dark" when filters are applied, because the filter is designed to remove orders of magnitude light flux and thereby expose the areas of the sun low in light flux

Why does the sun look yellow and the sky blue?

Sunspots video incoming?