描述: 紫外线辐射，缩写为“UV”，是由波长在10纳米到380纳米之间的基本波所组成的电磁辐射。这些波长介于X射线和可见光之间。来自天体的大部分紫外线辐射都会被地球大气层吸收，因此紫外线天文学必然需要空间望远镜，如哈勃空间望远镜；或更专门的天文台，如GALEX。紫外线辐射可用于研究炽热、年轻的恒星，确定星际介质的化学成分，研究太阳活动和日冕，以及探索活动星系核的某些特性。

相关词条

• 电磁辐射
• 可见光谱
• 星际介质
• X射线

词条和定义状态： 该术语的英文原始定义已通过天文研究人员和教师的审核
该术语及其定义的译文仍待审核

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.