外太空的英语

近期关于外太空的英语的讨论热度持续攀升 ，我们通过多方渠道收集整理了相关资讯
，并进行了系统化的梳理。若这些内容恰好能为您提供参考，将是我们最大的荣幸 。

外太空的英语为：the outer space
。

太空（英语：Space） ，汉语字典解释是极高的天空。位于瑞士日内瓦的国际航空联合会定义了大气层与太空的界线：以离地球海平面100千米（约62英里）的高度为分界线
，称为卡门线 。卡门线以美国科学家西奥多·冯·卡门的名字命名
。

地球物理学家将大气空间（或称为空气空间）分为5层。对流层，海平面至10千米 。对流层有浓密的空气 ，称为浓密大气层。浓密大气层随高度增加，空气越来越稀薄
。平流层
，10-40千米之间。中间层，40~80千米 。80-370千米为热层 ，属于电离层的下部
。

外大气层
，370千米以上的空间，属于电离层的上部。从地球表面到100千米的高度 ，随高度增加
，空气越来越少 。地球上空的大气约有75%存在于对流层内，97%在平流层以下
。

热层的空气密度为地球表面的1% ，在外太空1.6万千米高度空气继续存在
，甚至在10万千米高度仍有空气粒子。因此，空气空间与外层空间没有明确的界限 。

外太空的例句：

1、探索外太空是一项向人类发出的挑战
。

Exploring outer space is a challenge to mankind.

2 、许多人不知道的是,垃圾也已成为外太空的一大问题。

What many people don't know is that junk has become a problem in outer space too.

3
、你知道“祝你生日快乐 ”这首歌是第一首在外太空被唱响的歌吗？

Do you know that the "Happy Birthday to You" song is the first song sung in outer space?

4、小行星 ，亦称为“小型行星
”
，在外太空中不计其数 。

Asteroids, also known as "minor planets", are numerous in the outer space.

5 、这可能看起来像在一个极端的地方进行DNA分析，但是让我们看看一个更极端的环境：外太空
。

This may seem like an extreme place for DNA analysis, but let's move on to an even more extreme environment: outer space.

6
、大成功外太空的征服是现代科学最伟大的成就之一。

triumph The conquest of outer space is one of the greatest triumphs of modern science.

7、NASA说 ，还有另外四起外太空物体在轨道意外相撞的先例 。

Therehave been four other cases in which space objects have collidedaccidentally in orbit, NASA said.

8 、小行星小行星，亦称为“小型行星”
，在外太空中不计其数。

Asteroids, also known as "minor planets," are numerous in the outer space.

9、在人类进入太空之前，NASA就建立了一系列卫星通讯设施 ，让在地面上的人们能够与外太空的人进行交流
。

Before humans were sent into space, NASA built satellites that could communicate with people on the ground about what outer space was like.

10
、二战前的一部**中有一位名叫Buck Rogers的男子登陆了火星
，他是一位能打败任何外太空敌人的英雄。

Moving pictures from before World War Two showed a man named Buck Rogers landing on the planet Mars. He was a hero who could defeat any enemy from outer space.

No one sucks here!

Do you think our planet is the only place in the universe where there is life? Until 1995, astronomers had never found a solar system like ours. A solar system is made up of a star surrounded by planets and other objects. In 1995, astronomers found a planet orbiting (going around) a distant star like our Sun. Since then, they have found other solar systems. Astronomers now think that there are many solar systems in the universe. They do not know whether there is life in any of these other solar systems.

Our solar system is the one we know the most about. The Sun is at its center. Our solar system includes everything that orbits around the Sun. Planets, moons, asteroids, comets, gas, and dust are all part of the solar system.

Our solar system lies near the edge of the Milky Way galaxy. A galaxy is a huge collection of stars. The Milky Way is shaped like a whirlpool. All the stars in the galaxy, including our Sun, orbit around the center of the Milky Way.

THE SUN

The Sun, like other stars, is a hot ball of gas. Hydrogen and helium are the main gases in the Sun. Almost all the energy in our solar system comes from the Sun. The Sun changes hydrogen into helium to create light and heat. These changes take place deep inside the Sun.

THE NINE PLANETS

Eight of the nine planets in our solar system fall into two groups called the inner planets and the outer planets. The four planets closest to the Sun are called the inner planets. They are Mercury, Venus, Earth, and Mars. The inner planets are also called the rocky planets, because they are made mainly of rock and iron. There are four outer planets: Jupiter, Saturn, Uranus, and Neptune. The outer planets are also called the gas giants because they are huge and made mainly of gas. Pluto, the farthest planet from the Sun is a small ball of ice. Some astronomers wonder whether Pluto should be called a planet.

Mercury is the planet that is closest to the Sun. It has a large core, or center, that is made of iron. Venus, the next planet from the Sun, is the hottest of the planets. The temperature on Venus is about 890° Fahrenheit (about 477° Celsius). Earth is the only planet known to have life. It also has plenty of liquid water. There are signs that liquid water may once have flowed on Mars, but now Mars is cold and dry. What happened to the water on Mars is a great mystery that scientists are trying to solve.

Jupiter is the largest of the planets. A thick atmosphere made of hydrogen and helium surrounds it. Jupiter’s clouds look like white, brown, and orange stripes going around the planet. There is an oval-shaped red spot in the clouds. Astronomers think this spot is a big storm that has been raging for hundreds of years! Saturn is the second largest planet and the sixth planet from the Sun. It has bright rings around it. Uranus and Neptune look like smooth blue balls. Methane gas gives these planets their blue color. Pluto is the smallest planet in our solar system. It is far from the Sun and very cold. Temperatures on Pluto can drop down to -387° Fahrenheit (-223° Celsius).

MOONS AROUND THE PLANETS

Seven of the planets have natural satellites, or moons. Mercury and Venus do not have any moons. Earth has 1 moon and Pluto has 3. Mars has 2 moons. Neptune has 13 known moons; Uranus has at least 27 moons; Saturn has 47 moons; Jupiter has at least 63 moons. Jupiter’s moon Io has active volcanoes.

ASTEROIDS, COMETS, AND DUST

There are thousands of asteroids in the solar system. Asteroids are small pieces of rock and metal. Most of them orbit the Sun between Mars and Jupiter. Asteroids that crash into Earth are called meteors. Sometimes they burn up as they fall toward Earth. They make streaks of light in the night sky. Pieces that land on the ground are called meteorites.

Comets are another type of object in the solar system. Comets are like dirty snowballs. They are made of ice and dust. Comets are usually far out in the solar system. Sometimes a comet comes in close to the Sun. When it comes in close, the comet starts to melt and looks like it has a long tail streaming out behind it. In 1994 pieces of a comet called Shoemaker-Levy 9 crashed into Jupiter. The crash made huge explosions and sent up fireballs that were larger than Earth.

HOW DID THE SOLAR SYSTEM FORM?

Astronomers think that the solar system may have come from a swirling cloud of gas and dust. First a star, our Sun, formed from a clump in the cloud. It began as a spinning ball of gas at the center of the cloud. Then the planets, their moons, and the other objects in the solar system formed from the leftover gas and dust. Other stars and solar systems in the universe may have formed the same way. In fact, new solar systems are still forming from giant clouds of gas and dust.

(现在应该是8大行星才对了！^_^）

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