If many such chains were created in a differentially rotating galaxy, the distribution of stars would resemble the observed distribution in a spiral galaxy.

如果许多这样的链是在一个不同的旋转星系中产生的，那么恒星的分布将类似于在螺旋星系中观察到的分布。

It appears as a spiral galaxy, which may be barred.

它看起来是一个旋涡星系，但可能是一个棒旋星系。

On the right, surrounded by blue spiral arms, is spiral galaxy M81.

右边被蓝色旋臂环绕的是旋涡星系m 81。

Barred spiral galaxy NGC 4731 lies some 65 million light-years away.

棒旋星系ngc 4731约在6500光年以外。

The mystery arises when one considers how a spiral galaxy rotates.

当人们考虑旋涡星系是如何转动的时候难题就来了。

Note that the shape of the normal-looking spiral galaxy has changed.

请注意，形状正常前瞻性的螺旋星系发生了变化。

But for a nearby, small spiral galaxy, the star-making party is almost over.

但是一个就在我们附近的小螺旋星系里，恒星生成的过程几乎结束了。

NGC 1512 is a barred spiral galaxy in the southern constellation of Horologium.

NGC 1512是一个处在南天时钟座的棒旋星系。

The Milky Way is a spiral galaxy; that is, if viewed from afar it would resemble a spiral.

银河是螺旋星系；那是如果观看从它在远处会类似螺旋。

NASA’s Swift satellite has captured the best view of a neighboring spiral galaxy that we’ve seen yet.

美国国家航空航天局的雨燕卫星，捕捉到了一个与我们临近的螺旋星系迄今为止最清晰的图像。

When viewed with Spitzer's infrared eyes, this elegant spiral galaxy sparkles with color and detail.

经斯皮策卫星的红外之眼，这个优美的涡旋星系显出精细的彩色效果。

Can you find, in the above image, a comet, a spiral galaxy, an open star cluster, and a supernova remnant?

在上面图中，你能找到：一彗星，一旋涡星系，一疏散星团和一超新星遗迹吗？

M82, as this irregular galaxy is also known, was stirred up by a recent pass near large spiral galaxy M81.

大螺旋星系m 81最近给力的“借火”将这个又被称为M82的不规则的星系唤起。

It is the spiral galaxy NGC 4603, the most distant galaxy in which Cepheid variables have been found.

本图是其中一个星系：漩涡星系ngc 4603，本报告中发现造父变星的最远星系。

The red and blue spots outside of the spiral galaxy are either foreground stars or more distant galaxies.

漩涡星系外周的红色和蓝色点都是前景星或者距离星系很远。

The M100 galaxy is a large spiral galaxy similar to our own Milky Way, containing over 100 billion stars.

M 100星系和我们的银河系相似，是一个巨大的漩涡状星系，拥有1千多亿颗恒星。

A pan away from a spiral galaxy occurs at about 4:00, and breathtaking vistas of the spiral occur until past 5:00.

远离螺旋星系的盘状物出现在大约400的位置，而螺旋星系惊人的美景出现在500以后。

NGC 2976 does not look like a typical spiral galaxy. It has a star-forming disk, but no obvious spiral pattern.

NGC 2976不像典型的涡旋星系：它有一个星暴盘，但看不到旋臂；

The last picture is of a classic spiral galaxy called NGC 4145, located approximately 68 million light-years from Earth.

最后一张照片是名为ngc 4145的典型螺旋星系，距地球约6800万光年。

The image reveals in unprecedented detail the current rapidrate of star birth in this famous "grand design" spiral galaxy.

图像前所未有的详细揭示了这个著名的“宏伟壮丽”的螺旋星系目前诞生恒星的速度。

Therefore, our Milky Way should be morphologically catalogued as a barred spiral galaxy instead of a normal spiral one.

最近十几年来，银河系已被确认为是一个棒旋星系，而不是无棒结构的普通旋涡星系。

The heart of our spiral galaxy is cluttered with stars, dust and gas, and at its very center, a supermassive black hole.

我们棒旋星系的核心塞满了恒星、气体和尘埃，而它的最中心是一个超级黑洞。

The mirror, in this case, is a vast blob of gas about 70,000 light-years away from the center of a spiral galaxy, where the quasar resides.

从这种情况看，这个大家伙实质上是来自70000光年之外的星系螺旋线（宇宙射线）的视像，也即是类星体所在之处。

Galaxies throughout the universe are ablaze with star birth. But for a nearby, small spiral galaxy, the star-making party is almost over.

遍及宇宙的星系因星暴现象(疯狂诞生恒星的现象)而闪耀，但在我们附近的小型涡旋星系中，星暴盛宴已经快结束了。

Explanation: Big, beautiful spiral galaxy M101 is one of the last entries in Charles Messier's famous catalog, but definitely not one of the least.

解说： 又大又美丽的螺旋星系 M101 是查理斯·梅西尔著名的星系目录中的最后一条，但绝对不是最不重要的。

The beautiful spiral galaxy, located in the southern constellation Pavo (the Peacock), is a virtual copy of our own Milky Way, though about twice as big.

这个美丽的螺旋状星系位于孔雀星座以南，它看起来完全就是我们的银河系的翻版，但却有它的两倍大。

It has been known for some time that outside the bright nucleus of a typical spiral galaxy luminosity falls off rapidly with distance from the center.

我们曾经认为在典型螺旋星系的明亮中心以外，亮度随距中心距离的增加而急剧减弱。

By exploiting a lucky accident, astronomers have for the first time measured a key property of a spiral galaxy located more than nine billion light-years away.

通过一个偶然的机会，宇宙学家们第一次测量到了九十亿光年之外某个螺旋星系的一个关键性质。