Photosphere – Photometric observations have shown that there is an opaque lower layer on the Sun, which we see in an optical telescope and perceive as the surface of the Sun. The photosphere has a thickness of 200-300 km, while the temperature in it decreases with a height of 8-10 thousand. Up to 4,300 K, which is the minimum temperature and low degree of ionization of the gas. Unlike other layers of the Sun, the photosphere has the lowest temperature and low ionization level.
Photosphere
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