太阳的外层大气称为日冕，那里的温度比光球层(即我们所看到的太阳表面)的温度要高好几百度。
The Sun's outer atmosphere is called the corona and it is several hundreds of times hotter than the photosphere, or the visible surface of the star.
在这些区域之外，是恒星辐射可见光的部分，即光球层，一般被当作是恒星的表面。
After those zones comes the part of the star that radiates visible light, the photosphere, which is often referred to as the surface of the star.
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