Description: 来自太空的电磁辐射必须先穿过地球大气层，才能被地面望远镜收集到。而伽马射线、X 射线、紫外线和某些波段的红外线辐射会被大气层完全过滤掉。为了观测它们，天文学家使用太空望远镜，有时也称作太空观测站：这些自动运行的卫星位于大气层之上，携带望远镜和仪器，将航天器定向到特定目标、接收指令并将数据传回地球。正如星星的闪烁现象所显示的那样，穿过大气层的光线会在这一过程中受到干扰。而在这方面，太空望远镜也能提供帮助。然而，太空望远镜很难维修。大多数太空望远镜要么在地球轨道上（如哈勃太空望远镜），要么在所谓的拉格朗日点 L2 上（如詹姆斯-韦伯太空望远镜）。

Related Terms:

• 红外线（IR）
• 天文台
• 人造卫星
• 紫外线（UV）
• X射线

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

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