Description: 紅外天文學是觀測紅外光的天文學分支。與可見光觀測相比，紅外天文學對溫度較低的天體更為敏感，也可以觀測到紅移較大的遙遠星系。紅外觀測受星際消光的影響較小，因此可以看到深空的星際氣體雲和塵埃雲。

地球大氣層中的分子會吸收大量來自太空的紅外光，因此地面上的紅外天文觀測主要是在吸收率較低的波長範圍內進行。地球及其大氣層都會輻射紅外線，因此需要特殊的技術來消除這種本底輻射。對於波長較長的紅外輻射，這種本底輻射加上大氣吸收使得地面觀測幾乎不可能。因此，許多紅外觀測都是利用太空望遠鏡進行的。不過，對於波長最長的紅外線，可以在非常乾燥的地方進行地面觀測。這通常被稱為亞毫米波天文學。

Related Terms:

• 電磁輻射
• 紅外線（IR）
• 紅外望遠鏡
• 紅移
• 星際消光
• 亞毫米波天文學

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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