The stars are known as Cepheid variables.

这些恒星就是我们熟知造父变星。

These are all the names of galaxies, massive concentration of stars.

这些都是星系名字，大量恒星。

And spinning stars collapse to a ring.

而旋转恒星会坍缩成一个环。

And the vehicle that's headed to our nearest star is named the Parker Solar Probe.

这次发射到距我们最近恒星运载火箭被命名为帕克太阳探测器。

In 1997, they saw evidence of planets near other stars like the sun.

1997年，他们找到证据证明与太阳类恒星附近有行星存在。

Well, this is a simulation of what that might look like.

好吧，其实这是模拟恒星形成过程。

This technology enables it to observe really hot parts of the universe like exploded stars.

这项技术使它能够观测到宇宙中热量非常高部分，比如爆炸恒星。

And this band is the densest part of our own Milky Way Galaxy.

这条带是银河系中恒星最密集部分。

Astronomers can estimate the size and brightness of a star by its color.

天文学家能从恒星估计它大小和亮度。

You'll see the light reaching us from planets and distant stars.

进入你们眼帘是来自行星和遥远恒星闪烁。

So a constellation is a group of stars that form a pattern.

所以星座是指一群形成图案恒星。

That's the one with the stars that make up the belt.

这是由恒星组成带状星座。

As big stars lived and died, they blew up and created new elements.

随着大恒星生灭，它们爆炸并创造出新元素。

Leavitt studied stars that get brighter and dimmer over time.

莱维特研究是随着时间推移而变亮或变暗恒星。

Well, astronomy, the study of stars, has lots of mind-boggling theories.

嗯，天文学，这个专门研究恒星学科真有很多让人不可思议理论。

They are now quite certain that around most stars there are planets.

他们现在相当确定，在大多数恒星周围都有行星。

The very first exoplanet around a sun-like star wasn't discovered until 1995.

直到1995年，第一颗环绕类太阳恒星运行系外行星才被发现。

They are believed to be formed by collapsed stars.

科学家认为，黑洞是恒星碰撞后形成产物。

They come in all sizes, at different orbital distances from their stars.

行星大小都不相同，行星环绕恒星轨道距离也不同。

They add that the North Star is not the brightest star in the sky.

他们补充说，北极星并不是天空中最亮恒星。