Spiral galaxies are a common galaxy type.

螺旋星系是一种常见的星系类型。

But spiral galaxies are those that look like giant pinwheel.

但是螺旋星系就像巨大的风车一样。

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

我们见过螺旋星系的——我们就生活在这样一个星系中！

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·鲁宾一直在观察螺旋星系。

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

如果这两个螺旋星系相撞，它们会结合成新的椭圆星系。

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

这使得它们类似于螺旋星系中央凸起的恒星。

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

旋状星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星系，包括狮子座Triplet，由三个螺旋星系组成的一组。

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

这是仙女座，一个大小和质量都跟银河系相差无几的螺旋星系。

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，也是个漩涡星系，它有两支旋臂，围绕着星光四溢的中心旋转。

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

大约一半的螺旋星系有一个直的结构，称为棒，从中心出来。

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

大多数螺旋星系都有充满活力的蓝色圆盘，由大质量的炽热发光恒星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旋状星系的兴起。

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

通过观察其他星系，我们可以了解自己之外的世界，那就是为什么我们断定，银河系呈螺旋状。

Even spiral galaxies abide by this ratio, right?

甚至漩涡星系也遵循这个比例 对吧?

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

这使它成为一个棒旋星系，就像可观测宇宙中的大多数星系一样。

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

透镜状星系位于椭圆星系和螺旋星系之间，偶尔星系之间会发生碰撞和相互作用。

But only Hubble was able to accurately pinpoint its location — about 50,000 light-years from a nearby spiral galaxy and roughly 15,000 light-years from a smaller galaxy.

但是只有哈勃望远镜能够准确地确定它的位置——大约距离附近一个螺旋星系约 50000 光年，距离一个较小星系约 15000 光年。

It captured these 19 spiral galaxies using near and mid-infrared technology that highlights stars and glowing dust in a level of detail astronomers have never seen before.

它利用近红外和中红外技术捕捉了这19个螺旋星系，突显了星星和发光尘埃的细节，这是天文学家以前从未见过的。

So over time, through collisions and crashes, the cloud loses its loft and flattens into a spinning, roughly 2 dimensional disk shape, like a solar system or a spiral galaxy.

所以，随着时间的推移，通过碰撞和崩解，星云失去了它垂直于旋转平面上的粒子高度变成扁平状（大概是二维的圆盘）旋转，就像太阳系或螺旋星系。