Glossary term: 灰塵
Description: 與地球不同,深空的塵埃顆粒非常微小,大多數小於千分之一毫米。它們是恆星之間介質(稱為星際介質)的重要組成部分。它們形成於不同的環境中,例如某些冷巨星或超新星的外層,並在這些恆星開始失去質量時分散到太空中。它們主要由硅酸鹽、碳化合物和微量其他元素組成。在星際介質的低溫緻密區域,這些物質可能被包裹在冰層中。它們是造成到達我們這裡的星光在星際間消光的主要原因。
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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
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".
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