The Planets

The Planets

行星

Chapter 1 What Is a Planet? Take a look at this picture. You can see the moon, right? But there is something else glowing in the night sky. Those tiny dots of light are planets!

第一章 什么是行星? 看看这张照片。你能看到月亮，对吧?但是夜空中有别的东西在发光。那些小光点就是行星!

You can get a great look at some of the planets with a telescope. Planets are round like balls. They travel through space at amazing speeds.

你可以用望远镜仔细观察一些行星。行星像球一样圆。它们以惊人的速度穿越太空。

Guess what? Our home, the Earth, is a planet! The Earth is one of eight planets. Some are bigger than the Earth and some are smaller. All of the planets orbit around the sun.

你猜怎么着?我们的家园，地球，是一颗行星! 地球是八大行星之一。有些比地球大，有些比地球小。 所有的行星都绕太阳运行。

The four planets closest to the sun are called the inner planets. The other four are called the outer planets. Let's take a space tour to learn all about them.

离太阳最近的四颗行星被称为内行星。其他四颗被称为外行星。让我们来一次太空之旅，了解它们的一切。

The planet Mercury is closest to the sun. It gets super-hot during the day. The surface of Mercury is covered with craters just like the moon.

水星离太阳最近。 白天会变得超级热。水星表面和月球一样布满了环形山。