黑暗星云之所以显著，是因为它们屏蔽了背景恒星的光芒。
The dark nebulae stand out because they block out background stars.
在经典黑暗星云中，蛇是星际气体和尘埃组成的卷须，长约650光年。
A classic dark nebula, the Snake is a tendril of interstellar gas and dust about 650 light years away.
从深空的影像中显示，在猎户座分子云复合体之中，延展的云气丝藏了无数的黑暗星云到星团的补丁。
A deep exposure shows everything from dark nebula to star clusters, all imbedded in an extended patch of gaseous wisps in the greater Orion Molecular Cloud Complex.
ALMA可望观测到黑暗时期的宇宙——一个宇宙最初形成星云的时代。
ALMA is expected to see into what's called the Dark Ages of the universe — a time when the universe's very first stars were forming.
9月24日发布的斯皮策空间望远镜短红外波图像里，星光在黑暗的核状云中(中间图片)闪耀开来，这片星云处在更巨大的星云里，该星云被称作L183。
Starlight bounces off a normally dark, interstellar core cloud (center) inside a larger cloud called L183 in a short-infrared-wavelength Spitzer Space Telescope image released on September 24.
天文学家探索NGC346星云，识别出一个在黑暗中排列的恒星胚胎群，就是这幅图的右侧可见的交叉的星尘线。
Exploring NGC 346, astronomers have identified a population of embryonic stars strung along the dark, intersecting dust lanes visible here on the right.
画面中央偏下，也就是位在参宿一右方的马头星云，由致密的黑暗尘埃组成，应当是天空中最被认可的形状。
Below the frame center and just to the right of Alnitak lies the Horsehead nebula, a dark indentation of dense dust that has perhaps the most recognized nebular shapes on the sky.
实际上，在这片黑暗的星云中很可能潜藏着大量的尘埃和分子气体，它们正在塌落而形成恒星，这一星云在这张华丽的星际肖像中绵延了近40光年的距离。
In fact, clumps of dust and molecular gas collapsing to form stars may well lurk within the dark nebula, a structure that spans almost 40 light-years across this gorgeous telescopic portrait.
进入周围的星云之中后，放射物的急流形成了密集气体高大黑暗的茎状物，它嵌入了星云之中。
Moving into the surrounding nebula, this torrent of radiation sculpted the tall, dark stalks of dense gas, which are embedded in the walls of the nebula.
在左侧的马头星云，靠近图像的顶部，可见小而黑暗的锯齿状物，那便是上镜的火焰星云。
To the left of the Horsehead Nebula, visible as the small dark indentation near the image top, is the photogenic Flame Nebula.
在左侧的马头星云，靠近图像的顶部，可见小而黑暗的锯齿状物，那便是上镜的火焰星云。
To the left of the Horsehead Nebula, visible as the small dark indentation near the image top, is the photogenic Flame Nebula.
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