出國(guó)留學(xué)網(wǎng)英語(yǔ)聽力欄目為您提供英語(yǔ)聽力音頻:我們?yōu)楹我獙⑼h(yuǎn)鏡送入太空?在潛移默化提升聽力和口語(yǔ)的過(guò)程中以幽默詼諧的方式為你解答那些那些你意想不到的科學(xué)小知識(shí),詳細(xì)內(nèi)容如下:
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If the purpose of a telescope is to bring far-away things closer to us,then why do we send some of them so far away ?The main reason to put a telescope into space is to avoid that perpetual trouble maker:the atmosphere since astronomenrs haven't yet figured out how to get rid of it.And it's a big nuisance.
如果說(shuō)望遠(yuǎn)鏡的任務(wù)是將遠(yuǎn)處物體呈現(xiàn)在我們面前,那么,我們?yōu)楹螌⑼h(yuǎn)鏡送去遠(yuǎn)方呢?將望遠(yuǎn)鏡送入太空的主要目的是為了避開麻煩制造者:大氣層,因數(shù)天文學(xué)家尚未找出擺脫大氣影響的方法.這問(wèn)題相當(dāng)惱人.
First off,the atmosphere plane gets in the way,what with its clouds and smoke and haze than can block light from distant stars or nearby planets.And even just the air in a clear sky blocks a huge range of the wavelengths of lights,pretty much only letting through visible light,anda smattering of infra-red and radio waves.
首先大氣平面擋在中間,其中的云、煙、霾會(huì)擋住遠(yuǎn)處星星和近處行星發(fā)出的光。即便晴空萬(wàn)里光是空氣就會(huì)擋住很大范圍的光波波段,幾乎只允許可見(jiàn)光、以及少數(shù)紅外光和無(wú)線電波通過(guò)。
The atmosphere is also -HEY! Stop that!...Distracting At day,visible light from the sun bounces off of air molecules,and other small particles and completely overwhelms the light from any other star you might want to look at.At night,the light from the moon and from human sources bounces off the same paricles and outshines the light from most distant and faint stars and galaxies,washing out their images.
此外大氣層還會(huì) -嘿!住手!……造成散射,白天 來(lái)自太陽(yáng)的可見(jiàn)光被空氣分子和其他微粒反射這會(huì)令來(lái)自其他恒星的光完全被淹沒(méi)無(wú)法觀測(cè)。晚上月光和人造光源同樣被這些粒子散射而來(lái)自遙遠(yuǎn)星星、暗星和銀河的光,徹底被淹沒(méi)其中。
The atmosphere also messes things up.Air is constantly moving,and just like a heat mirage,this turbulence blurs and distorts starlight,which causes stars to twinkle,and telescope images of stars to be blurry We can avoid all of these nuisances by putting telescopes above the atmosphere,in space.Plus,there are other benefits;A space telescope can make observations 24 hours a day.
大氣也會(huì)令事情一片混亂??諝馐橇鲃?dòng)的,就像海市蜃樓 這些星光會(huì)因紊變得模糊扭曲,星星因此而閃爍不停 望遠(yuǎn)鏡看到的星圖變得模糊不清,將望遠(yuǎn)鏡移至大氣之上的太空中可以避免所有上述問(wèn)題。此外還有其他好處;太空望遠(yuǎn)鏡可以24小時(shí)持續(xù)觀測(cè)。
A space telescope can be put far enough away from the earth's infra-red warmth and then cooled down really cold so that it can take clean infra-red images,and a space telescope is a telescope we freaking put in outer sapce!Of course,there are some downsides to space telescopes;It;s hard and expensive to get them there,hard and expensive to fix them if they break or you want to upgrade to newer fancier parts,hard and expensive to take people there on tours,but really,How can you argue,with"this".And this,And this,And this,And even this,And this,And this,This too,And this.
太空望遠(yuǎn)鏡可以遠(yuǎn)離地球的紅外線溫度冷卻到足夠低的溫度以拍攝清晰的紅外線圖像,將望遠(yuǎn)鏡送入太空是我們的最佳選擇!當(dāng)然,天空望遠(yuǎn)鏡也有缺點(diǎn);首先將它們送進(jìn)太空就超難超貴,出現(xiàn)問(wèn)題時(shí)維修或是升級(jí)新功能也是超難貴,安排人員巡查也是超難貴,但是說(shuō)真的看到這個(gè)時(shí)簡(jiǎn)直無(wú)法抱怨。還有這個(gè)、以及這個(gè)、這個(gè)、這個(gè)、這個(gè)、這個(gè)、甚至這個(gè)、這個(gè),還有這個(gè)、這個(gè)。
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