The spiral arms attach to this structure.

螺旋臂连接到该结构上。

All previous LFBOTs have been found in these spiral arms.

所有先前发现的 LFBOT 都在这些螺旋臂中被发现。

Spiral arms are the same sort of phenomenon.

旋臂也是同样的情况。

The disk has two major spiral arms in it, and two minor ones.

圆盘上有两个主旋臂和两个次旋臂。

It is made of four major spiral arms and a bar-shaped main area.

它由四个大的螺旋型枝节和一个条状的核心区域组成。

And towards the outer edge of one of the spiral arms is an almost insignificant dot.

在其漩涡结构的边缘有一个微乎其微的小点。

These kinds of stars are found in the spiral arms of galaxies where star birth is occurring.

这类恒星存在于螺旋星系的螺旋臂中，那里也是恒星诞生的地方。

Some were round, some elongated, and some even seemed to have spiral arms.

有些是圆形的，有些是细长的，有些甚至看起来有螺旋臂。

They also light up the gas around them, accentuating the spiral arms.

它们还照亮了周围的气体，突出了旋臂。

A nebula entering a spiral arm might hit another one already in there — a cosmic fender bender.

一个进入旋臂的星云可能会撞上已经在那里的另一个——一个宇宙碰撞。

These stars are very easy to spot at great distances, making the galaxy's spiral arms look blue.

这些恒星很容易在很远的地方被发现，这使得星系的旋臂看起来是蓝色的。

It has four large, spiral arms encircling its center.

它有四个巨大的螺旋臂环绕着它的中心。

But the path of this sprinter supposedly originates in a spiral arm of the Milky Way known as the norma arm.

但这个恒星的路径据说起源于银河系的一个称为诺玛臂的旋臂。

Our planet is part of a spiral arm circling the Milky Way.

我们的星球是环绕银河系的旋臂的一部分。

We live in one, the Milky Way, a gigantic disk galaxy with sprawling spiral arms.

我们就生活在其中一个之中——银河系，它是一个巨大的圆盘星系，有着伸展的旋臂。

After all that, it's actually hard to say how many spiral arms the Milky Way has!

毕竟，实际上很难说银河系有多少旋臂！

Spiral arms are where the majority of star birth occurs in the galaxy, which helps maintain the spiral pattern.

旋臂是星系中大多数恒星诞生的地方，这有助于维持螺旋模式。

Mapping the galaxy's spiral arms is ongoing work and it's kind of a mess.

规制星系的旋臂是一直在运转的，这有点混乱。

But we know the spiral arms have been around a while, and AREN'T wound up.

但我们知道旋臂已经存在一段时间了，它们并没有缠绕起来。

That's why spiral arms don't wind up: the arms are waves made up of objects in them, but the objects themselves are transient.

旋臂是由其中的物体组成的波，但这些物体本身是瞬变的。