Glossary term: 光球
Description: 光球層（”光球“）是恆星的某一層，我們觀測到的光就是從這裡發出的。從更深、密度更大的層發出的光在逃離恆星之前就會被吸收。而較高的層密度較小，不會發出明顯的光。
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Term and definition status: The original definition of this term in English have been approved by a research astronomer and a teacher The translation of this term and its definition is still awaiting approval
This is an automated transliteration of the simplified Chinese translation of this term
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In Other Languages
- 阿拉伯語: الغلاف الضوئي
- 德語: Photosphäre
- 英語: Photosphere
- 法語: Photosphère
- 義大利語: Fotosfera
- 日語: 光球 (external link)
- 韓語: 광구
- 簡體中文: 光球
Related Media
太陽表面的高分辨率圖像
Caption: 這張高分辨率圖像展現了太陽最外層可見"表面"（光球層）的一小片區域，覆蓋面積達36,500×36,500公里。它是丹尼爾·井上建太陽望遠鏡在科學驗證階段拍攝的首批圖像之一。圖中每個網狀結構的尺寸約相當於美國得克薩斯州、法國、阿富汗或索馬裡的國土面積。在較亮的網狀中心區域，來自太陽內部深處的等離子體上升至表面，冷卻後沿著劃分網狀結構的暗色縫隙下沉。這些暗色條紋中還能觀察到微小而明亮的磁標記點。
Credit: NSO/NSF/AURA
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License: CC-BY-4.0 Creative Commons 姓名標示 4.0 國際 (CC BY 4.0) icons
Close-up view of a sunspot
Caption: This image of a sunspot was taken by the Daniel K Inouye Solar Telescope (DKIST), operated by the U.S. National Science Foundation. It was taken only in light with a wavelength of 530 nanometers, within the greenish-yellow part of the visible spectrum.
The picture reveals the detail of the spot's structure and the Sun’s photosphere. The dark central region, known as the umbra, is surrounded by a lighter area called the penumbra with radially elongated features stretching towards the umbra. Note that the umbra and penumbra here are not the same as the umbra and penumbra that occur during an eclipse.
The sunspot measures approximately 5000 kilometres in diameter, roughly equivalent to the east-west span of China. While the umbra appears black, it is actually hot and bright. It only appears dark because it is a few thousand kelvin cooler than the surrounding solar photosphere. Surrounding the sunspot, granulation patterns of plasma are visible on the photospheric surface of the Sun.
Credit: NSO/NSF/AURA
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License: CC-BY-4.0 Creative Commons 姓名標示 4.0 國際 (CC BY 4.0) icons
