During a total solar eclipse, what is the outermost layer of the Sun's atmosphere that becomes visible as a pearly-white glow? 在日全食期間，太陽大氣的最外層會顯現出珍珠般的白光，這層叫什麼？
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The corona extends millions of kilometers into space and is only easily seen during a total solar eclipse. 日冕向太空延伸數百萬公里，只有在日全食期間才能輕易看到。 The convective zone is an interior layer of the Sun, not part of the atmosphere. 對流層是太陽的內部層，不屬於大氣層。 The chromosphere lies just above the photosphere and appears with a reddish glow during an eclipse, but it is not the outermost extended halo. 色球層位於光球層上方，在日食期間呈微紅色光輝，但它不是最外層的延伸暈圈。 The photosphere is the visible 'surface' of the Sun that we see normally every day. 光球層是我們平時每天看到的太陽可見「表面」。