👉 Photosphere is a concept in astronomy that describes the innermost layer of the solar system, where most of the planet's mass and energy resides. This region is known for its dense atmosphere, which contains a significant amount of hydrogen and helium gas that is primarily composed of carbon and oxygen. The photosphere is also home to the hottest and coldest points in the solar system due to the high temperature of the sun, which causes the outer layers of the planet to cool off. Photospheric phenomena like