l猎户星座中的马头星云是最著名的暗星云。
L the Horsehead nebula in Orion is the best-known dark nebula.
恒星正在该暗星云中形成。
l暗星云不仅本身不发光，而且会吸收所有的光线。
L Dark nebulae not only have no light of their won, they also soak up all light.
也被称为剑鱼座30，红色和粉色气体标示一个大质量发射星云，尽管这儿也存在着超新星遗迹和暗星云。
Also called 30 Doradus, the red and pink gas indicates a massive emission nebula, although supernova remnants and dark nebula also exist there.
事实上，暗星云中很可能隐藏有分子气体和尘埃丛坍缩形成恒星，漂亮的望远镜视野中的这个结构宽几乎40光年。
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 the gorgeous telescopic view.
约5光年高的暗星云编号为巴纳德33，能够被看见仅仅因为其暗尘埃在明亮的发射星云IC 434的衬托下显出轮廓。
About five light-years "tall", the dark cloud is cataloged as Barnard 33 and is visible only because its obscuring dust is silhouetted against the glowing red emission nebula IC 434.
你可以在较暗的地区用双筒望远镜看到这两个星云。
These nebulae can be seen with binoculars from a dark location.
这个发射星云在南天星座天坛座另一个巨大的暗分子云的边缘被发现，离我们约4000光年。
The emission nebula is found near the edge of an otherwise dark large molecular cloud in the southern constellation Ara, about 4, 000 light-years away.
下面标注过的图可以帮助辨认恒星，其中包括明亮的白色恒星天津四(天鹅座)，织女星，牛郎星，银河系中心附近的星云，还有银河中黑色的遮掩尘埃云，也被称为大暗隙。
Highlights include bright white stars Deneb (in Cygnus), Vega, and Altair, nebulae near the Galactic Center, and the dark obscuring dust clouds of the Milky Way also known as the Great Rift.
这两个明亮的星云相距1500光年，中间隔着一片模糊尘埃的暗云。
Separated by a dark cloud of obscuring dust, the two bright nebulae are about 1,500 light-years away.
这两个明亮的星云相距 1500光年，中间隔着一片模糊尘埃的暗云。
Separated by a dark cloud of obscuring dust, the two bright nebulae are about 1, 500 light-years away.
旋涡星云因为非常暗，难以得到它们的清晰的光谱。
Good spectra of the spiral nebulas are difficult to obtain because of their extreme faintness.
三裂星云比礁湖星云稍微暗一些。
三裂星云比礁湖星云稍微暗一些。
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