So some planetary systems are aligned just so.

所以有些行星系就是这样排列的。

It's going to some other planetary system.

而是去了其它星系。

And we see all the stars surrounded by completed planetary systems.

我们也知道所有恒星都由完全形成的行星系统环绕。

Working on the origin of planetary systems is like being a detective.

研究行星系统的起源就像做一名侦探。

We have found so many different kinds of planetary systems in the galaxy.

我们在这个星系中发现了很多不同种类的行星系统。

And it may help straighten out some mysteries about how planetary systems form.

这或许有助于解开行星系统如何形成的某些谜团。

By the time we're ready to settle even the nearest other planetary systems.

到那时，我们准备好移民到即使是最近的星球的时候。

This suggests that our Solar System isn't a typical planetary system, but a relatively rare one.

这表明，我们的太阳系不是一个典型的行星系，而是一个相对罕见的行星系。

It's very rare for a planetary system to be so perfectly aligned that we can see the transit.

一个行星系如此完美地排列在一起以至于我们能看到凌日，这是非常罕见的。

In 1960, astronomer Frank Drake used interstellar radio waves to scan distant planetary systems for signs of life.

1960年，天文学家弗兰克·德雷克利用星际无线电波扫描遥远的星系以探寻生命的迹象。

What are the properties of planetary systems and what can they tell us about how they form and evolve?

行星系统的性质是什么，它们能告诉我们它们形成和进化的什么信息？

That civilization could program self-replicating probes to visit every planetary system in the galaxy.

该文明可以对自我复制探测器进行编程，以访问银河系中的每个行星系统。

Your planetary systems exist at once, simultaneously, both in time and in space.

你们的行星系统同时存在于时间和空间中。

The reason they want to do that is because they hope this will help people understand more about how planetary systems work.

美国宇航局表示，他们之所以想发射罗曼望远镜，是因为他们希望这能帮助人们更多地了解行星系统是如何工作的。

But our Solar System seems to have a very different structure from the majority of planetary systems discovered over the last few years.

但我们的太阳系似乎有着与过去几年发现的大多数行星系统都非常不同的结构。

When the gravitational attraction of two galaxies takes effect, a collision occurs which rips entire stars and planetary systems out of their orbit.

当两个星系的引力相互作用时，便会发生一场碰撞，将所有恒星和恒星系撕扯出它们的轨道。

At only 2 million years old, the planetary system V830 Tauri is the youngest in our galaxy so far discovered.

行星系统 V830 金牛座只有 200 万年的历史，是我们银河系中迄今为止发现的最年轻的行星系统。

The finding suggests that weirdly aligned planetary systems are born that way-and that stars and their embryonic planets can be all topsy-turvy-even in their infancy.

研究结果表明，排列奇怪的行星系统诞生时就是如此，恒星和它们的胚胎行星可能都是乱七八糟的，甚至在婴儿期也是如此。

" Every piece of evidence we’ve found today suggest that planetary systems, planets around the stars, are common, " said astronomer Liu.

“我们今天发现的每一个证据都表明， 行星系统、围绕恒星的行星是常见的， ” 天文学家刘说。

Seven months ago, we smashed a spacecraft into an asteroid and altered its orbit, confirming a newfound ability to create planetary defense systems against earthbound objects.

7 个月前，我们发射了一架航天器撞向一颗行星，改变了它的运行轨道，验证了这项新发现的能力，可以建立起小行星防御系统，抵御飞向地球的物体。