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太空中的望远镜(下)

来源:可可英语 编辑:Kelly   可可英语APP下载 |  可可官方微信:ikekenet

Check out what Jupiter looks like from some of our high-up observatories.

看看从我们的高空天文台上望去木星是什么样子。

The photos are much clearer.

这些照片要清晰得多。

But the telescopes are still on Earth, so some of Earth’s air still gets in the way.

但望远镜仍然在地球上,所以地球上的一些空气仍然会挡住视线。

So if we want to get a really clear image, we could design a different kind of telescope.

因此,如果我们想要得到非常清晰的图像,我们可以设计一种不同类型的望远镜。

Yes, we could design a telescope to work in space!

是,我们可以设计一个在太空工作的望远镜!

Space telescopes, like the James Webb Space Telescope, look really different compared to many telescopes here on Earth.

太空望远镜,如詹姆斯·韦伯太空望远镜,与地球上的许多望远镜相比,这台望远镜看起来真的很不同。

They don’t have the same kind of lenses and mirrors, and they have to be much, much bigger.

它们并非相同类型的透镜和反射镜,而且它们必须非常大。

Their different designs help these telescopes to look super far into space, and then send the images back to Earth, instead of having people looking through the telescope itself.

不同的设计帮助这些望远镜观察到超远的太空,然后将图像发回地球,而非让人们通过望远镜观看物体。

With no air in between the telescope and the things it’s looking at, the images can be much clearer.

由于望远镜和其所观察的物体之间没有空气,图像可以更清晰。

Take a look, Sam sent me this picture of Jupiter from the James Webb Space Telescope.

看一看,山姆发来了詹姆斯·韦伯太空望远镜拍摄的这张木星的照片。

You can see the details of the planet so well!

你可以很清楚地看到这个星球的细节!

And we can even design telescopes to see things people can’t.

我们甚至可以设计望远镜来观测人类无法看到的物体。

Some things in space can’t be seen with our eyes, but they’re still out there for us to learn about.

太空中的一些东西是我们用肉眼看不到的,但它们仍然在那里等着我们去了解。

We can design telescopes to see things we can’t, and show them in pictures.

我们可以设计望远镜来观测我们看不到的东西,并用图片展示它们。

That means we can use the James Webb Space Telescope to observe space mysteries in amazing new ways, and see whole galaxies like we’ve never seen before.

这意味着我们可以使用詹姆斯·韦伯太空望远镜以令人惊叹的新方式观察太空奥秘,并以前所未有的方式看到整个星系。

This telescope took a long time and a lot of hard work to build, and it’s super far away from us now, so designing it to do lots of important observation jobs well was really important.

建造这个望远镜花了很长时间,做了很多艰苦的工作,而且这台望远镜现在离我们非常遥远,所以设计它来做好很多重要的观测工作真的很重要。

Telescopes come in many shapes, sizes, and even locations, and each design can be used for a different purpose.

望远镜的形状、大小甚至位置都各不相同,每一种设计都用于不同的目的。

Our small telescope is great for playing and observing stars at home, Sam the Bat’s telescope is great for his special space observations, and the James Webb Space Telescope is going to help us make discoveries no human has ever made before!

我们的小望远镜很适合在家里玩儿、在家里观察星星,山姆(蝙蝠)的望远镜很适合特殊的太空观测,而詹姆斯·韦伯太空望远镜将帮助我们做出前所未有的发现!

I bet that Sam will be really excited to answer your new questions about the James Webb Space Telescope, Squeaks.

我敢打赌,山姆会非常兴奋地回答你关于詹姆斯·韦伯太空望远镜的新问题。

But speaking of questions, how about we answer a quick question from a viewer first?

但说到问题,我们先回答观众的一个简短问题如何?

Today’s question comes from Vibha, age 10.

今天的问题来自10岁的伟柏哈。

Vibha asks, “How does a chameleon change colours?

伟柏哈问:“变色龙是如何变色的?”

Panther chameleons are amazing lizards that can change the color of their skin from green and blue, to yellow and orange, white and red.

豹变色龙是一种令人惊叹的蜥蜴,它们可以将皮肤的颜色从绿色和蓝色,变成黄色和橙色、白色和红色。

A chameleon’s skin is filled with lots of teeny, tiny crystals called iridophores.

变色龙的皮肤布满了许多被称为虹膜细胞的微小晶体。

The iridophores have a special structure, or shape, that makes the chameleon look a certain color when light bounces off of the crystals into our eyes.

虹膜细胞有一种特殊的结构(形状),当光线从晶体反射到我们的眼睛时,变色龙看起来就是某种颜色。

When the chameleon wants to change its color, something incredible happens: it changes the shape of its crystals, and that changes its color!

当变色龙想要改变颜色时,不可思议的事情发生了:它改变了晶体的形状,这样也就改变了颜色!

So when you’re seeing a chameleon change color, you’re really seeing the chameleon make thousands and thousands of tiny crystals move in its skin.

所以当你看到变色龙改变颜色时,你会看到变色龙让成千上万的微小晶体在它的皮肤里移动。

How cool!

太酷了!

Thanks for asking, Vibha!

谢谢你的提问,伟柏哈!

If you want to send us a question, you can ask a grownup to help you get started at patreon. com/scishowkids.

如果你想给我们发送问题,可以请一个大人来帮你在patreon. com/scishowkids上发送。

Have you ever used a telescope to see far away?

你曾经用望远镜看过很远的地方吗?

What kind of telescope would you want to design?

你想设计什么样的望远镜?

Be sure to hit the subscribe button to keep exploring amazing new science tools with me, Squeaks, and all of our friends!

一定要点击订阅按钮,与我、吱吱和我们所有的朋友一起继续探索令人惊叹的新科学工具!

We’ll see you next time, here at the Fort.

我们下次在堡垒见。

重点单词   查看全部解释    
observation [.ɔbzə'veiʃən]

想一想再看

n. 观察,观察力,评论
adj. 被设计用来

联想记忆
panther ['pænθə]

想一想再看

n. 豹

 
incredible [in'kredəbl]

想一想再看

adj. 难以置信的,惊人的

 
viewer ['vju:ə]

想一想再看

n. 观看者,电视观众,观察器

 
observe [əb'zə:v]

想一想再看

v. 观察,遵守,注意到
v. 评论,庆

联想记忆
planet ['plænit]

想一想再看

n. 行星

 
check [tʃek]

想一想再看

n. 检查,支票,账单,制止,阻止物,检验标准,方格图案

联想记忆
certain ['sə:tn]

想一想再看

adj. 确定的,必然的,特定的
pron.

 

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