Spiral galaxies are a common galaxy type.

螺星系是一种常见星系类型。

But spiral galaxies are those that look like giant pinwheel.

但是螺星系就像巨大风车一样。

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·鲁宾一直在观察螺星系。

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

我们见过螺星系——我们就生活在这样一个星系中！

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

这使得它们类似于螺星系中央凸星。

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

如果这两个螺星系相撞，它们会结成新椭圆星系。

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

状星系运行速度似乎比用物理法则算出速度快。

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

它也包括很多发光星系，包括狮子座Triplet，由三个螺星系组成一组。

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螺星系。

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

大约一半螺星系有一个直结构，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，也是个漩涡星系，它有两支，围绕着星光四溢中心转。

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

从宇宙诞生初期到像银河系一样状星系兴。

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

大多数螺星系都有充满活力蓝色圆盘，由大质量炽热发光星控制着它们光芒散射。

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世界，那就是为什么我们断定，银河系呈螺状。

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.

这使它成为一个棒星系，就像可观测宇宙中大多数星系一样。

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位置——大约距离附近一个螺星系约 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个螺星系，突显了星星和发光尘埃细节，这是天文学家以前从未见过。

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，随着时间推移，通过碰撞和崩解，星云失去了它垂直于转平面上粒子高度变成扁平状（大概是二维圆盘）转，就像太阳系或螺星系。

The Milky Way is a spiral galaxy that both the Sun and solar system are a part, along with a bunch of stars clustered together that create a brightly lit center.

银河系是一个螺星系，太阳和太阳系都是它一部分。除此以外，还有一群星聚集在一，形成了一个明亮中心。