9 Sun, Moon and Stars

Sun, moon And Stars

太阳，月亮和星星

The night sky. When you look at the night sky, you can see shining stars, far away in space. You might be able to spot the Moon too. Everything you can see is only a tiny part of space. The Moon looks small, but it would take about four days to drive all the way around it.

夜空。当你仰望夜空时，你可以看到遥远的太空中闪烁的星星。 你也许还能看到月亮。 你所能看到的一切都只是空间的一小部分。 月球看起来很小，但绕它一圈需要大约四天的时间。

Out in space. Our planet Earth is a lump of rock in space. It is one of a group of nine planets. Each planet goes around the Sun on its own invisible path. The Sun and the planets are called the Solar System.

在太空中。我们的地球是太空中的一块岩石。 它是九大行星之一。 每颗行星都以自己看不见的轨道围绕太阳公转。 太阳和行星被称为太阳系。

Experts used to think that Pluto was a planet, but now they've changed their minds and call it a dwarf planet. Most of the planets look about the same size here, but some are really much, much bigger than others. Saturn is so far away from Earth that it took seven years for a spacecraft to reach it.

专家们过去认为冥王星是一颗行星，但现在他们改变了主意，称它为矮行星。 大多数行星看起来都差不多大，但有些确实比其他行星大得多。 土星离地球很远，一艘宇宙飞船花了7年时间才到达它。

The Sun. The Sun is a star. It is the closest star to Earth, so it looks bigger than other stars. The Sun was formed by thick clouds of dust and gas. It became a glowing ball of gas that is hottest in the middle. The surface of the Sun bubbles and boils.

太阳。太阳是一颗恒星。 它是离地球最近的恒星，所以看起来比其他恒星都大。 太阳是由厚厚的尘埃和气体云形成的。 它变成了一个发光的气体球，中间最热。 太阳表面起泡并沸腾。

The Sun has dark areas called sunspots. They are cooler than the rest of the Sun. Never look straight at the Sun. Its strong light can hurt your eyes.

太阳有黑暗的区域，叫做太阳黑子。 它们比太阳的其他部分更冷。 永远不要直视太阳。 它的强光会伤害你的眼睛。