Spiral galaxies are a common galaxy type.

旋系是种常见的系类型。

But spiral galaxies are those that look like giant pinwheel.

但是旋系就像巨大的风车样。

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

但是他能在1889年就知道旋系吗？

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·鲁宾直在旋系。

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

如果这两旋系相撞，它们会结合成的椭圆系。

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

我们见过旋系的——我们就生活在这样系中！

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

这使得它们类似于旋系中央凸起的恒。

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

旋状系的旋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，由三旋系组成的组。

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

这是仙女座，大小和质量都跟银河系相差无几的旋系。

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

大约半的旋系有直的结构，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.

仙女座和银河系样，也是漩涡系，它有两支旋臂，围绕着光四溢的中心旋转。

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

大多数旋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样的旋状系的兴起。

The Milky Way is spiral disc galaxy.

银河系是旋盘系。

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

通过其他系，我们可以了解自己之外的世界，那就是为什么我们断定，银河系呈旋状。

Even spiral galaxies abide by this ratio, right?

甚至漩涡系也遵循这比例 对吧?

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

另是旋系，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.

这使它成为棒旋系，就像可测宇宙中的大多数系样。

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

透镜状系位于椭圆系和旋系之间，偶尔系之间会发生碰撞和相互作用。