星云的

The left over cosmic debris is steadily being consumed by a black hole with a billion times the mass of the Sun which lies at the center of Centaurus A.

这个行星状星云被认为是一颗类似太阳的恒星正处于生命的最后阶段。最近，许多行星状星云被发现也具有这样的光晕，可能是在恒星演变早期由内部抛出的物质形成。

Because the gas in nebulae is used to make new stars.

因为在星云中的气体是用来产生新星的，并且正在灭亡的星从它们的气体中创立了星云。

The Wizard Nebula -- This image of the open star cluster NGC 7380, also known as theWizard Nebula, is a mosaic of images from the WISE mission spanning anarea on the sky of about 5 times the size of the full moon.

向导星云-这个月亮的形象，开放星团星系7380，向导也被称为星云，是一个完整的图像马赛克从规模明智的使命就跨越一个时代的天空面积约5。

The Wizard Nebula -- This image of the open star cluster NGC 7380, also known as the Wizard Nebula, is a mosaic of images from the WISE mission spanning an area on the sky of about 5 times the size of the full moon.

向导星云-这个月亮的形象，开放星团星系7380，向导也被称为星云，是一个完整的图像马赛克从规模明智的使命就跨越一个时代的天空面积约5。

Explanation: One of the most identifiable nebulae in the sky, the Horsehead Nebula in Orion , is part of a large, dark, molecular cloud .

解释：天空中最容易辨认的星云之一，猎户座的马头星云，是巨大而黑暗的分子云的一部分。

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。

In fact, the bright star near the center of this nebula is likely only a few hundred thousand years old, powering the nebular glow as it clears out a cavity in the molecular cloud\'s star forming dust and gas.

实际上，该星云中央附近的明亮恒星的年龄可能仅仅几十万岁，它们引起星云发光并在分子云的恒星形成的尘埃和气体中清扫出一片空洞。

Mountains of opaque dust appear on the right, while other dark filaments of dust are visible threaded throughout the nebula. A single massive star visible near the center causes much of the Trifid's glow.

此外，影像右方有山峰状的浓密尘埃云，以及散布在星云各处的尘埃丝带，而影像中央的那颗大质量恒星提供了三裂星云发出辉光的能源。

At the nebula's centre, a clutch of massive,scorching stars send waves of matter smashing into the surrounding interstellar material, generating a glowing structure that appears ring-like from our perspective.

图中左上方就有这样令人瞩目的水泡状星云，在星云中央，一群炽热巨星的恒星风高速冲入周围的星际物质中，从我们远方看来，就激起环形的发光结构。

A planetary nebula is an expanding cloud of gas ejected from a star that is nearing the end of its life.

行星状星云一个由来自中心濒临死亡恒星所释放出的气体组成的正在膨胀的星云。

In the negative and interrogative forms, of course, this is identical to the non-emphatic forms.

。但是，在否定句或疑问句里，这种带有"do"的方法表达的效果却没有什么强调的意思。

Go down on one's knees;kneel down

屈膝跪下。。。下跪祈祷