3 Space Voyager Mars

Small and Red What is the fourth planet from the sun? It is Mars!

小而红离太阳第四远的行星是什么？ 这是火星！

It is red. Why? The soil has iron in it. Iron makes it look red.

它是红色的。为什么?土壤中含铁。 铁使它看起来是红色的。

Mars is small. It is half the size of Earth. It has two moons.

火星很小。它的大小是地球的一半。 它有两个卫星。

Look up. You can see Mars at night. It is bright.

查找。你可以在晚上看到火星。 它是明亮的。

Mars is very cold. It has ice caps.

火星很冷。它有冰帽。