50 Watching Stars

Watching Stars by Elsa Raubenheimer Table of Contents Chapter 1 What Is in the Night Sky? page 2 Chapter 2 What Do Astronomers Do? page 8 Chapter 3 How Can People Watch Stars? page 13 Glossary/ Index page 15 Comprehension Check page 16

《看星星》作者:艾尔莎·劳本海默目录第一章夜空中有什么? 第2章天文学家做什么? 第三章人们怎样才能看星星? 词汇表/索引第15页理解检查第16页

Chapter 1 What Is in the Night Sky? The moon is visible in the night sky. Sometimes the moon seems big and round. Sometimes the moon is hard to see. Some nights the moon looks like it is getting bigger. Other nights the moon looks smaller. The moon's shape seems to change during a month. Language DETECTIVE Sometimes: Sometimes is a compound word. A compound word is made up of two smaller words. Find a compound word on page 3. The moon has four shapes called phases. Facts About the Moon Years Old: around 4.5 billion years old Distance from Earth: 238,900 miles (384,400 km) Size: About one-fourth of the size of Earth Neil Armstrong Neil Armstrong was the first person to walk on the moon. In 1969, two astronauts landed on the moon. Their boots made footprints on the lunar surface. The lunar surface is the moon's top layer. On the moon, there is no rain to damage the footprints. The footprints may be visible for millions of years. astronauts: people who travel in space

第一章夜空中有什么? 月亮在夜空中可见。 有时月亮看起来又大又圆。 有时月亮很难看到。 有些夜晚，月亮看起来越来越大。 其他晚上，月亮看起来较小。 月亮的形状似乎每个月都在变化。 有时:有时是一个复合词。 合成词是由两个较小的词组成的。 在第三页找到一个复合词。 月亮有四种形状，叫做月相。 关于月球的事实年龄:大约45亿年距离:238,900英里(384,400公里)大小:大约是地球大小的四分之一尼尔·阿姆斯特朗尼尔·阿姆斯特朗是第一个在月球上行走的人。 1969年，两名宇航员登上了月球。 他们的靴子在月球表面留下了脚印。 月球表面是月球的顶层。 在月球上，没有雨水破坏脚印。 这些脚印可能在数百万年里都是可见的。 宇航员:在太空旅行的人

People can look for many things in the night sky with the right tools. A telescope helps people see things that are very far away. Telescopes might help people see some faraway planets. Planets go around the sun in bigger and bigger circles. Mercury is closest to the sun. Next in order are Venus, Earth, Mars, Jupiter, Saturn, Uranus, and Neptune. Sun Mercury Venus Earth Mars Jupiter Saturn Uranus Neptune How Many Moons? Earth only has one moon. But Jupiter has 16 moons. Venus has no moons. People can see stars more clearly through a telescope. Many stars are in the night sky. A star is a ball of burning gas. The sun is a star. The sun is not the biggest star. Stars that look small to us may be bigger than the sun. The coolest biggest stars are red. The hottest, smallest stars are blue or white. The sun is yellow and medium in size. Language DETECTIVE Coolest: Coolest is an adjective. It has the —est ending. Find three other adjectives with the —est ending on this page.

人们可以用合适的工具在夜空中寻找很多东西。 望远镜帮助人们看到很远的东西。 望远镜可以帮助人们看到一些遥远的行星。 行星围绕太阳转的圈越来越大。 水星离太阳最近。 接下来依次是金星、地球、火星、木星、土星、天王星和海王星。 太阳水星金星地球火星木星土星天王星海王星多少颗卫星? 地球只有一个卫星。但是木星有16颗卫星。 金星没有卫星。人们通过望远镜可以更清楚地看到星星。 夜空中有许多星星。 恒星是一个燃烧的气体球。 太阳是一颗恒星。太阳不是最大的恒星。 在我们看来很小的恒星可能比太阳还大。 最大的最酷的恒星是红色的。 最热、最小的恒星是蓝色或白色的。 太阳是黄色的，中等大小。 最酷的:最酷是一个形容词。 它的结尾是-est。在本页找到另外三个以-est结尾的形容词。

A group of stars is a constellation. A constellation looks like a connect-the-dot picture. People thought constellations looked like people and animals from stories. People gave names to constellations. This constellation is named Orion, the hunter. The brightest stars can be connected to make a picture. Stars may seem to move in the night sky. But stars do not move. Earth moves through space. People can see new and different stars. The Center of the Universe People once thought Earth was the center of the universe. Nicolaus Copernicus was a scientist. Copernicus discovered that Earth moves around the sun. Nicolaus Copernicus discovered that stars do not move in the sky, but planets do move.

一群恒星就是一个星座。 星座看起来像一个连点图。 人们认为星座看起来像故事中的人和动物。 人们给星座起了名字。 这个星座被命名为猎户座，猎人。 最亮的星星可以连成一幅画。 星星似乎在夜空中移动。 但是恒星不动。地球在太空中运动。 人们可以看到新的和不同的星星。 人们曾经认为地球是宇宙的中心。 尼古拉·哥白尼是一位科学家。 哥白尼发现地球绕着太阳转。 尼古拉·哥白尼发现恒星在天空中不运动，但行星会运动。

Chapter 2 What Do Astronomers Do? Astronomers study the night sky. Astronomers use tools like telescopes to learn. Then astronomers share what they learned using computers. computers: machines that store a lot of information Meet Galileo Galileo Galilei invented the first telescope in 1609. This telescope was simpler than telescopes today. Galileo could see stars more clearly than ever before. Some special telescopes are sent into space. Satellites bring these telescopes into space. Satellites are machines that circle Earth. Satellites take pictures of space. The pictures are sent back to Earth. The Hubble telescope circles Earth on a satellite. Hubble telescope

第2章天文学家做什么? 天文学家研究夜空。 天文学家使用望远镜等工具来学习。 然后天文学家们分享他们用电脑学到的东西。 认识伽利略伽利略于1609年发明了第一台望远镜。 这个望远镜比今天的望远镜更简单。 伽利略能比以前更清楚地看到星星。 一些特殊的望远镜被送入太空。 卫星将这些望远镜送入太空。 卫星是绕地球运行的机器。 卫星拍摄太空照片。 照片被送回地球。 哈勃望远镜在卫星上绕地球旋转。 哈勃望远镜