星云的

Planetary nebulae are a type of isolated gaseous nebulae possessing a fair degree of bilateral symmetry.

行星状星云是一类孤立的气体星云，具有相当程度的双侧对称性。

You can use them to see the stunning pair of nebulae known as the Trifid and the Lagoon.

您可以用它们看到一对惊人的紫色云星，众所周知的三裂星云和礁湖星云。

If you like finding hidden pictures, get set to find a Coathanger, the North American Nebula and Ring Nebula.

如果你喜欢寻找隐藏着的图像，准备找到一个衣架形状的，北美星云和环状星云。

Explanation: This gorgeous celestial vista is centered on one of the Milky Way's own planetary nebulae, M57, the famous Ring Nebula.

说明：这幅美丽的天文景观，主角是我们银河系的著名行星状星云M57；别名为环状星云。

Photo Gallery: Nebulae This dark column of cool molecular hydrogen gas and dust is part of the Eagle Nebula, a star-forming region 6,500 light-years away in the constellation Serpens.

意译：星云图片画廊。这个黑暗柱状物的清凉分子氢气和灰尘中的一部分――鹰星云，恒星形成区域， 6500光年之遥，在星座巨蛇座。

NGC 3372, known as the Great Nebula in Carina , is home to massive stars and changing nebula.

NGC 3372，被称为船底座大星云，拥有众多质量巨大的恒星，不断改变着星云。

Now the famous nebula MZ3, called Formic, between 3000 and 6000 light years.

現在是著名的MZ3星云，被称为蚂蚁星云，距离为3000和6000光年之間。

The Trifid, also known as M20, is only about 300,000 years old, making it among the youngest emission nebulae known.

三裂星云又名M20，年龄大约是三十万年，是已知最年轻的发射星云之一。

An emission nebula that contains much dust, the Keyhole Nebula is roughly 9,000 light years distant.

钥匙洞星云是一个包含有大量星际尘埃的辐射星云，距离地球大约9000光年。

The spoke features seem to indicate that the Helix Nebula is itself an old and evolved planetary nebula.

这种辐条结构，似乎表明螺旋星云本身是一个老切高度演化的行星状星云。

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