The stars are known as Cepheid variables.

恒星就是我们熟知的造父变星。

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

都是星系的名字，大量的恒星。

And spinning stars collapse to a ring.

而旋转的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.

次发射到距我们最近恒星的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，他们找到据明与太阳类似恒星附近有行星的存在。

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

好吧，其实是模拟恒星形成的过程。

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

项技术使它能够观测到宇宙中热量非常高的部分，比如爆炸的恒星。

I was looking at data like this, measuring the brightness of each star over time.

我看的是种数据，持续测量每颗恒星的亮度。

We see baby stars being born in stellar nurseries surrounded by dust and gas.

我们知道原恒星诞生于充满宇宙尘埃和气体的恒星摇篮。

So we did not know we are recycled stars.

所以我们不知道我们是再生的恒星。

So we will be looking in this way at small stars that have Earth-sized planets.

我们将以种方式观测有地球大小行星的小恒星。

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

天文学家能从恒星的颜色估计它的大小和亮度。

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

所以星座是指一群形成图案的恒星。

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

是由恒星组成的带状星座。

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

随着大恒星的生灭，它们爆炸并创造出新的元素。

Leavitt studied stars that get brighter and dimmer over time.

莱维特研究的是随着时间的推移而变亮或变暗的恒星。

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

嗯，天文学，个专门研究恒星的学科真的有很多让人不可思议的理论。

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

他们现在相当确定，在大多数恒星的周围都有行星。

As they form, they spiral inwards towards their star.

当它们形成的时候，它们向呈内螺旋态朝向它们的恒星。

And a lower-mass planet will make the star wobble much less.

而一颗质量较低的行星会使恒星的摆动更小。