能帮我将下列翻译成英文吗
当我们提到宇宙空间时，我们往往会想到那里是一无所有的、黑暗寂静的真空。其实，这不完全对。恒星之间广阔无垠的空间也许是寂静的，但远不是真正的“真空”，而是存在着各种各样的物质。这些物质包括星际气体、尘埃和粒子流等，人们把它们叫做“星际物质”。
星际物质与天体的演化有着密切的联系。观测证实，星际气体主要由氢和氦两种元素构成，这跟恒星的成分是一样的。人们甚至猜想，恒星是由星际气体“凝结”而成的。星际尘埃是一些很小的固态物质，成分包括碳合物、氧化物等。
星际物质在宇宙空间的分布并不均匀。在引力作用下，某些地方的气体和尘埃可能相互吸引而密集起来，形成云雾状。人们形象地把它们叫做“星云”。按照形态，银河系中的星云可以分为弥漫星云、行星状星云等几种。
弥漫星云正如它的名称一样，没有明显的边界，常常呈不规则形状。它们的直径在几十光年左右，密度平均为每立方厘米10-100个原子（事实上这比实验室里得到的真空要低得多）。它们主要分布在银道面（HOTKEY）附近。比较著名的弥漫星云有猎户座大星云、马头星云等。
行星状星云的样子有点像吐的烟圈，中心是空的，而且往往有一颗很亮的恒星。恒星不断向外抛射物质，形成星云。可见，行星状星云是恒星晚年演化的结果。比较著名的有宝瓶座耳轮状星云和天琴座环状星云。
PS:或者各位能找到关于星云的介绍英文版也可以``
谢谢拉~~小生不胜感激~~
參考答案:Will be able to help me following to translate English
when we mentioned when space, we will often be able to think there will be does not have a thing in the world, the dark silent vacuum. Actually, this incompletely right. Between perhaps the star the broad boundless space is silent, but far is not true “the vacuum”, but has various material. These materials including interstellar gas, dust and particles stream and so on, the people are called them “the interstellar matter”.
The interstellar matter and the heavenly body evolution has the close relation. The observation confirmed that, the interstellar gas mainly constitutes by the hydrogen and the helium two kind of elements, this with the star ingredient is same. The people even suspected that, the star is “the congealment” becomes by the interstellar gas. The interstellar dust is some very small solid state material, the ingredient gathers the thing, the oxide compound including the carbon and so on.
Interstellar matter in space distributed and non-uniformity. But under the gravitation, certain place gas and the dust possibly mutually attract are crowded, forms the fog shape. The people are called vividly them “the nebula”. According to the shape, in Milky Way's nebula may divide into fills the air the nebula, a line of astroid nebula and so on several kinds.
Just like fills the air the nebula its name to be same, does not have the obvious boundary, assumes the irregular shape frequently. Their diameter about several dozens light years, the density average (this vacuum which obtains compared to laboratory in must lower a lot in fact) for each cubic centimeter 10-100 atom. They mainly distribute nearby galactic plane (HOTKEY). Compared with famous fills the air the nebula to have the orion big nebula, the wharf nebula and so on.
The line of astroid nebula appearance spits a little likely the smoke rings, the center is spatial, moreover often has a very bright star. The star outward projects the material unceasingly, forms the nebula. Obviously, a line of astroid nebula is a result which the star old age evolves. Compared with famous has the aquarius ear annular nebula and the lyra ring nebula.
