Spiral galaxies are a common galaxy type.

螺系一种常见的系类型。

But spiral galaxies are those that look like giant pinwheel.

螺系就像巨大的风车一样。

But could he have known about spiral galaxies back in 1889?

他能在1889年就知道螺系吗？

In the 1960s and 1970s, astronomer Vera Rubin was observing spiral galaxies.

在20世纪60年代和70年代，天文学家维拉·鲁宾一直在观察螺系。

If these two spiral galaxies collided, they would merge into one new elliptical galaxy.

如果这两个螺系相撞，它们会结合成的椭圆系。

Spiral galaxies we've seen: We live in one!

我们见过螺系的——我们就生活在这样一个系中！

This makes them similar to the stars in the central bulges of spiral galaxies.

这使得它们类似于螺系中央凸起的恒。

The arms of spiral galaxies seem to move faster than the laws of physics would allow.

系的臂运行的速度似乎比用物理法则算出的速度快。

It also contains many bright galaxies, including the Leo Triplet, a group of three spiral galaxies.

它也包括很多发光的系，包括狮子座Triplet，由三个螺系组成的一组。

This is Andromeda, a spiral galaxy roughly the same size and mass as the Milky Way.

这仙女座，一个大小和质量都跟银河系相差无几的螺系。

About half of spiral galaxies have a straight structure, called a bar, coming out from the center.

大约一半的螺系有一个直的结构，称为棒，从中心出来。

Like the Milky Way, Andromeda is a spiral galaxy, two ringed arms circling a light-filled centre.

仙女座和银河系一样，也个漩涡系，它有两支臂，围绕着光四溢的中心转。

Most spiral galaxies have disks that are a vibrant blue in color, the massive hot luminous stars dominating their emission.

大多数螺系都有充满活力的蓝色圆盘，由大质量的炽热发光恒控制着它们光芒的散射。

From a time near the birth of the cosmos to the rise of spiral galaxies like our own Milky Way.

从宇宙诞生的初期到像银河系一样的系的兴起。

The Milky Way is spiral disc galaxy.

银河系螺盘系。

Based on other galaxies we see outside of our own is why we conclude that our galaxy's spiraled as I'm shown.

通过观察其他系，我们可以了解自己之外的世界，那就为什么我们断定，银河系呈螺。

Even spiral galaxies abide by this ratio, right?

甚至漩涡系也遵循这个比例 对吧?

Another was a spiral galaxy, sometimes called the " Hidden Galaxy, " which looks much like our home galaxy, the Milky Way.

另一个螺系，有时被称为“隐藏系”，它看起来很像我们的家乡银河系。

That makes it a barred spiral galaxy, just like most galaxies in the observable universe.

这使它成为一个棒系，就像可观测宇宙中的大多数系一样。

Lenticular galaxies fall somewhere in between elliptical and spiral galaxies Occasionally galaxies collide and interact.

透镜系位于椭圆系和螺系之间，偶尔系之间会发生碰撞和相互作用。