There are nine planets in the solar system.

在阳系中有九大行。

Look at the solar system, and look at the Earth.

另一些时候则会最终走到尽头。

Ganymede is the largest moon in our solar system.

伽尼墨德(木卫三)是阳系里最大卫。

Our solar system is drowning in water.

我们阳系正淹没在水中。

None of the asteroids in our solar system look like that.

阳系中小行也没有这种形状。

Our solar system forms in the meantime. - Yeah.

与此同时，我们阳系形成了。 - 是。

Consider the planet Venus in our solar system.

拿我们阳系内作为例子。

Well, our solar system definitely isn't alone.

其实，我们阳系并不孤单。

Neptune is one of the farthest planets of the solar system.

海王是阳系中最远行之一。

It's " Homeric" odyssey across the outer solar system.

它是穿越外阳系“荷马”奥德赛。

What is the second-smallest planet in our solar system?

阳系中，第二小行是什么？

They can learn all about the solar system, too.

他们也可以学到很多阳系知识。

Jupiter is the biggest planet in the solar system.

木是阳系中最大行。

Jupiter really is the lord of the solar system.

木真是阳系里霸主。

Now water is very common in our solar system.

水在我们阳系中很常见。

Our solar system is turning into a giant spa.

我们阳系正在变成 一个巨大温泉浴场。

Other planned missions cover over half the solar system.

其它计划囊括了多半个阳系。

Everybody ready to say goodbye to our solar system.

大家准备跟我们阳系说再见吧。

In your own small solar system?

在你们自己小阳系吗？

What is the fastest spinning planet in our solar system?

阳系中自转最快行是哪颗？