7 Space Voyager Pluto

Small and Far Away Pluto was once called a planet. Not now. Today it is a dwarf planet.

又小又远的冥王星曾经被称为行星。 不是现在。现在它是一颗矮行星。

Dwarf planets are small. They orbit the sun. Rocks orbit with them.

矮行星很小。它们绕太阳运行。 岩石和它们一起运行。

Dwarf planets are icy. They are far from the sun. It takes Pluto 248 years to orbit the sun!

矮行星是冰的。它们离太阳很远。 冥王星绕太阳一周需要248年！

Pluto is red and gray. It has a big moon. It is Charon.

冥王星是红色和灰色的。它有一个大月亮。 它是冥卫一。

What are other dwarf planets? Ceres is gray. It has craters.

还有哪些矮行星？ 谷神星是灰色的。它有陨石坑。