马头星云
(原标题: The Horsehead Nebula)
2024-11-25
浏览次数: 15
猎户座的马头星云是天空中最容易辨认的星云之一，它是一个巨大的黑暗分子云的一部分。这个不寻常的形状也被称为巴纳德33号，最初是在19世纪末的一张摄影底片上发现的。红光主要来自星云后面的氢气，被附近明亮的猎户座西格玛电离。马头星的黑暗主要是由厚厚的灰尘造成的，尽管马头星颈部的下部在左边投下了一个阴影。离开星云的气体流被强磁场引导成漏斗状。马头星云底部的亮点是正在形成的年轻恒星。光从马头星云到达我们需要1500年的时间。这张特色图片是由智利山区的Chilescope天文台拍摄的。
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One of the most identifiable nebulas in the sky, the Horsehead Nebula in Orion, is part of a large, dark, molecular cloud. Also known as Barnard 33, the unusual shape was first discovered on a photographic plate in the late 1800s. The red glow originates from hydrogen gas predominantly behind the nebula, ionized by the nearby bright star Sigma Orionis. The darkness of the Horsehead is caused mostly by thick dust, although the lower part of the Horsehead's neck casts a shadow to the left. Streams of gas leaving the nebula are funneled by a strong magnetic field. Bright spots in the Horsehead Nebula's base are young stars just in the process of forming. Light takes about 1,500 years to reach us from the Horsehead Nebula. The featured image was taken from the Chilescope Observatory in the mountains of Chile.
© Alex Lin (Chilescope)