The other way to think about radiative zone is .. The X and Gamma rays in Sun's core are so strong that they wouldsimply pass through Earth .. making a tiny hole all through ..In Sun's radiative zone they barely move one mm .. density and pressure .. it's like 300000 km thick cover of Gold circling around core .. gradually reducing in density as we go outwards

It doesn't take that long because of gravity, it's the path taken to the surface.

Astronomy Magazine

I heard that the light from nuclear fusion reactions in the Sun's core takes about 200,000 years to reach its surface. I thought the speed of light is constant. Why does it take so long? | Astronomy.com

categories:Science | tags:Magazine

Light can travel in a black hole, it just has no path that leads outside of the event horizon.

You're absolutely right, I might have simplified it too much ("gravity" in quotes) though the fusion which causes the radiation is at last caused by the immense gravity. But your shared link explains it better than I could. 👍🤗