What are the different internal and external of the sun?

The Sun's internal structure consists of several layers: the core, where nuclear fusion occurs; the radiative zone, where energy is transferred outward through radiation; and the convective zone, where energy is transported by convection currents. Externally, the Sun has the photosphere, which is the visible surface; the chromosphere, an outer layer that emits a reddish glow; and the corona, the Sun's outer atmosphere that extends millions of kilometers into space and is visible during a solar eclipse. These layers interact dynamically, influencing solar activity and phenomena such as solar flares and coronal mass ejections.