A lot of the radiation that the sun's core emits gets through its surface without interacting with it much. This is false. The sun is very opaque; photons from

A lot of the radiation that the sun's core emits gets through its surface without interacting with it much. This is false. The sun is very opaque; photons from the core could take millions of years to reach the surface. https://en.wikipedia.org/wiki/Radiation_zone https://en.wikipedia.org/wiki/Radiation_zone https://en.wikipedia.org/wiki/Solar_core#Energy_transfer https://en.wikipedia.org/wiki/Solar_core#Energy_transfer This is the article you're looking for: https://en.wikipedia.org/wiki/Corona#Coronal_heating_problem https://en.wikipedia.org/wiki/Corona#Coronal_heating_problem