Layers of the Sun:
Tbe Sun's body is made up of several layem Tbe layer that forms the viable surface of the Sun is called the photosphere-it is the surface that demarcates Lady oi the Sun and its atmosphere. When we talk of the diameter of the Sun, we are referring-to the diameter of the photosphere. The temperature of the photosphere is about 6000°C. The innermost layer of the Sun is its core where its energy is produced through nuclear reactions. There are other layers between the core and the photosphere which we will not describe here.
Like the Sun's body, the solar atmosphere too has several layers. The outermost layer of the Sun's atmosphere is called the corona. Normally, the corona cannot be s&n due to the brilliance of the photosphere. However, if it is seen during a total solar eclipse, it is visible in its full. The corona extends all the way.upto the Earth's orbit and even beyond.