The Sun

The Core, Photosphere, Chromosphere, and Corona

photosphere: the surface of the sun

chromosphere: the layer above the photosphere, appears as a red glow around the sun

corona: the outermost layer of gases that surround the sun, only seen during a solar eclipse

the core: the central region of the sun, nuclear reactions occur here

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The Radiative zone and Convection zone

the radiative zone: the section of the solar interior between the innermost core and the outer convection zone

the convection zone: a region of agitated plasma between the sun's core and the photosphere