APOD260128 M78：红海中的蓝色反射星云 - 天文(Astronomy)版

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APOD260128 M78：红海中的蓝色反射星云

AstroAstro 2026-01-29 08:01:47

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M78：红海中的蓝色反射星云

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图像提供与版权： Daniel McCauley[1]

英文原文:Explanation: In the vast Orion Molecular Cloud complex, several bright blue nebulas are particularly apparent. Pictured here in the center are two of the most prominent reflection nebulas - dust clouds lit by the reflecting light of bright embedded stars . The more famous nebula is M78 , in the image center, cataloged over 200 years ago. To its upper left is the lesser known NGC 2071 . Astronomers continue to study these reflection nebulas to better understand how interior stars form. The overall red glow is from diffuse hydrogen gas that covers much of the Orion complex that spans much of the constellation of Orion . Nearby in the greater complex , which lies about 1,500 light year s away, are the Orion Nebula , the Horsehead Nebula , and Barnard's Loop -- partially seen here as the white band on the upper left. Almost Hyperspace: Random APOD Generator 说明：在广阔的猎户座分子云复合体[2]中，有几团明亮的蓝色星云格外引人注目。图中[3]中心是两个最显著的反射星云[4]——尘埃[5]云被其中明亮恒星[6]的反射光照亮。最著名的星云是位于图像中心的M78[7]，这个星云早在200多年前就已被编录星表。在其左上方是较鲜为人知的NGC 2071[8]。天文学家持续研究[9]这些反射星云[10]，以便更了解[11]其内部的恒星形成过程。整体的红色光芒[12]来自弥漫的氢气[13]，它覆盖了猎户座复合体[14]的大部分区域，而该复合体横跨猎户座的大部分区域。在距离地球约1500光年的猎户座分子云复合体附近，猎户座星云[15]、马头星云[16]和巴纳德环[17]——巴纳德环在图中部分可见，位在左上方的白色条带。