How does the sun's atmosphere differ from its interior?

The temperature inside the sun can reach millions of Kelvin, while the photosphere, the outermost layer of the sun, has a temperature of only 6,000 Kelvin. The sun's interior is far hotter than its exterior.

The Sun's atmosphere differs from its interior primarily in terms of temperature, density, and composition. The interior of the Sun, comprising the core, radiative zone, and convective zone, is extremely hot and dense, with temperatures reaching millions of degrees Celsius and pressures millions of times greater than Earth's atmosphere. In contrast, the Sun's atmosphere, consisting of the photosphere, chromosphere, and corona, is cooler and less dense, but still very hot compared to Earth's surface. The composition of the Sun's atmosphere also differs from its interior, with higher concentrations of elements such as hydrogen and helium in the outer layers. Additionally, phenomena such as solar flares, prominences, and coronal mass ejections occur in the Sun's atmosphere, driven by complex magnetic interactions, which are not present in its interior.