Glossary term: 暗星雲
Description: 暗星雲是太空中由氣體和塵埃組成的冷雲，它阻擋了來自其後面的恆星和明亮星雲的大部分光線，因此看起來很暗。儘管塵埃僅占星雲中物質的1%，但正是塵埃阻擋了來自後面的光線。暗星雲會阻擋可見光和紫外線，但通過紅外線還是可以看到它們。最著名的例子就是獵戶座的馬頭星雲。
Related Terms:
See this term in other languages
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
The OAE Multilingual Glossary is a project of the IAU Office of Astronomy for Education (OAE) in collaboration with the IAU Office of Astronomy Outreach (OAO). The terms and definitions were chosen, written and reviewed by a collective effort from the OAE, the OAE Centers and Nodes, the OAE National Astronomy Education Coordinators (NAECs) and other volunteers. You can find a full list of credits here. All glossary terms and their definitions are released under a Creative Commons CC BY-4.0 license and should be credited to "IAU OAE".
If you notice a factual or translation error in this glossary term or definition then please get in touch.
In Other Languages
- 阿拉伯語: السديم المظلم
- 德語: Dunkelnebel
- 英語: Dark Nebula
- 法語: Nébuleuse sombre
- 義大利語: Nebulosa Oscura
- 日語: 暗黒星雲 (external link)
- 韓語: 암흑성운
- 尼泊爾語: कृष्ण नीहारिका
- 簡體中文: 暗星云
Related Media
Dust Clouds and Nebulae near R Coronae Australis
Caption: The image shows a dark and dusty cloud and some bright reflection nebulae near the binary star R Coronae Australis. The dark cloud spans several light-years and is located in the constellation Corona Australis near the constellation Sagittarius, in the direction of the Milky Way's center. The cloud appears to swallow the light of distant stars behind it as the dust particles in it scatter light passing through in all directions. This gives it the appearance of a void in the sky. This dark nebula is part of the broader Corona Australis Molecular Clouds. R Coronae Australis forms part of the Coronet Cluster, a collection of young stars which formed at some point in the last two million years.
Around R Coronae Australis in the center of the image is the small reflection nebula NGC 6729 with two blueish reflection nebulae NGC 6726 and NGC 6727 lying to the upper right of it. In these nebulae the dust scatters light from bright stars near the nebula towards an observer on Earth, making it glow in this image.
Credit: ESO
credit link
License: CC-BY-4.0 Creative Commons 姓名標示 4.0 國際 (CC BY 4.0) icons
