6 Astronomy

Astronomy

天文学

Studying the sky. When you look up at the night sky, you might see lots of stars. This is only a tiny part of space. Astronomers study space to find out about the different things that are found there.

研究天空。当你仰望夜空时，你可能会看到很多星星。 这只是空间的一小部分。 天文学家研究太空是为了发现在那里发现的不同的东西。

What's in space? There are lots of different things in space. Planets are big, round lumps of rock or balls of gases. Some have rocky or icy moons moving around them. Smaller pieces of rock or ice are called asteroids. Stars are massive balls of gases. Many have planets moving around them.

太空中有什么？太空中有很多不同的东西。 行星是又大又圆的岩石块或气体球。 有些卫星周围有岩石或冰冷的卫星。 较小的岩石或冰块被称为小行星。 恒星是巨大的气体球。 许多行星围绕着它们运行。

Millions and millions of stars are grouped together in galaxies... ...and there are millions and millions of galaxies in space.

数以百万计的恒星聚集在星系中…… …宇宙中有无数的星系。

A place in space. Planet Earth is one of eight planets that move around a star called the Sun. The Sun and planets are known as the Solar System.

空间中的一个位置。地球是围绕一颗叫做太阳的恒星运行的八颗行星之一。 太阳和行星被称为太阳系。

The planets in the Solar System are very far apart. They're very different sizes, too. Jupiter is the biggest planet. This is how big Jupiter is compared to Earth. Jupiter is so far away from Earth, it looks like a bright star in the sky.

太阳系中的行星相距很远。 它们的大小也大不相同。 木星是最大的行星。 这是木星相对于地球的大小。 木星离地球很远，看起来就像天空中一颗明亮的星星。