5 Space Voyager moon

Earth's Moon Look up! What is that in the sky? It is the moon. It is the brightest thing in our night sky.

地球的月亮抬头看！天空中是什么？ 这是月亮。它是我们夜空中最亮的东西。

Why is it so bright? It reflects the sun's light.

为什么这么亮？它反射太阳光。

The moon has phases. It looks full. This is when the sun shines fully on the moon.

月亮有月相。看起来是满的。 这是太阳完全照在月亮上的时候。

Now it is a crescent. Only part of it is lit by the sun.

现在它是一个新月。只有一部分被太阳照亮。

The moon orbits Earth. It has its own gravity. It pulls on the oceans. It makes tides.

月球绕地球运行。它有自己的引力。 它拉着海洋。它产生潮汐。