首页
外语
计算机
考研
公务员
职业资格
财经
工程
司法
医学
专升本
自考
实用职业技能
登录
外语
One night in the early 1600s Galileo got tired of using the newfangled(新花样的)telescope to spot ships and pointed it to the heaven
One night in the early 1600s Galileo got tired of using the newfangled(新花样的)telescope to spot ships and pointed it to the heaven
admin
2016-04-30
38
问题
One night in the early 1600s Galileo got tired of using the newfangled(新花样的)telescope to spot ships and pointed it to the heavens instead. Suddenly the moon had mountains. A fleet of moons encircled Jupiter. And people would never again gaze at the night sky in the same way.
Now astronomers looked 8,000 light-years into the cosmos with the Hubble Space Telescope. Orbiting 370 miles up, above city lights and the rippling atmosphere, Hubble has confirmed the existence of black holes, revealed a gallery of bizarre galaxies, and chronicled the catastrophic(灾难的)explosions of dying stars.
Not bad for a satellite that in the beginning had something of a catastrophic reputation itself, Hubble was lifted into orbit with great expectation by the space shuttle Discovery in April 1990. Almost immediately it was clear that the primary mirror was misshapen(变形的)—not to the extreme but enough to pull some lace curtains across Hubble’s "window on the universe." The telescope’s true golden age began in December 1993, when the crew of the shuttle Endeavor rode to the rescue.
With hinged doors and modular(组合式的)parts, Hubble was designed to be serviced in space.
Like roadside mechanics, the astronauts pulled up to Hubble, opened the hood, and installed replacement parts. They included corrective mirrors that canceled out the existing mirror flaw. In the following months astronomers marveled at razor-sharp views of a universe dizzy with exploding stars and colliding galaxies, stretching off from here to the edge of eternity.
When you look into space, you are looking back through time. Even at 186,000 miles a second, light requires a measurable amount of time to get from one place to another. Sunlight bounced off the moon requires a second to reach earth, so when you look at the moon, you are actually looking at the moon a second ago. With its unobstructed view, Hubble can look back some 11 billion years—just two billion years or so after the creation of the universe—to see galaxies already forming. These galaxies are speeding away from us. The farther they are, the faster they’re going—the most distant approach the speed of light. In the 1920s astronomer Edwin Hubble came up with a formula that expresses the proportional relationship of distances between clusters of galaxies and the speeds at which they are moving.
For the rest of us Hubble is simply the greatest tour guide ever. The Eagle Nebula’s towering pillars evoke the same awe as any ancient temple. The violence of Eta Carinae’s explosion is as heart-stopping as the eruption of a volcano. And thanks to Hubble we can begin to register the notion that while earth is our local address, we have an entire universe that we can call home.
According to the author, for common people the greatest achievement of Hubble is to _____.
选项
A、help them look farther in the universe
B、help them migrate to the universe
C、evoke the same awe as an ancient temple
D、give them a wider horizon of the universe
答案
D
解析
根据首段首句和末句可以推断,哈勃望远镜就像导游一样使我们对宇宙的视野更开阔了,D正确。本题最具干扰性的是选项A,从末段第2、3句的例子来看,作者关注的并不是可视距离的远近,而是宇宙景象的奇特,因此A不符合题意;B在原文并未提及;C将天鹰座星云的信息张冠李戴到了哈勃望远镜上。
转载请注明原文地址:https://jikaoti.com/ti/hcyFFFFM
0
大学英语六级
相关试题推荐
A、Hethoughtsheshouldmakeaphoneifanythingwentwrong.B、Hethoughtsheshouldjustwaitforsomeone’shelp.C、Hewasafra
Goinghungryisamajorcontributortoillhealth,particularlyamongchildren,andanewreportrevealshowlong-lastingtheda
Settinganearlierbedtimeforyourchildrencouldhelpkeeptheirweight【B1】______,anewstudyfinds.Fastfood,toomuchscree
Settinganearlierbedtimeforyourchildrencouldhelpkeeptheirweight【B1】______,anewstudyfinds.Fastfood,toomuchscree
TheAmericantraditionalpatternofclassroomexperienceatthecollegelevelbringstheprofessorandagroupof20-30student
A、Itscreatorpublishedshortstoriesinnewspapersforyears.B、Itspreadacrossthecountrywiththecommonname.C、Manypeopl
Thewaypeopleholdtothebeliefthatafun-filled,painfreelifeequalshappinessactuallyreducestheirchancesofever【B1】
中国书法(calligraphy)作为一种具有4000多年历史的抽象艺术,它不仅仅是书写汉字,也不只是写好汉字,它是一门表现精神的艺术。书法作品承载着书法家的人格、情绪、思想和灵魂。中国书法在中国盛行了数千年,在日本和韩国这样的邻国也很流行。在中国,书法作
中国悠久的历史、广袤的国土、与世界各国和海外文化的广泛接触,孕育了中餐的独特艺术。中国有一句古话至今还广为流传,叫作“民以食为天”。几千年的推陈出新和不断累积,使中餐受到越来越多的海外人士的青睐,成了我国对外文化交流的一个友好使者。现代中国已享有“烹饪王国
Onenightintheearly1600sGalileogottiredofusingthenewfangled(新花样的)telescopetospotshipsandpointedittotheheaven
随机试题
铣床夹具中若选用插人式长销作定位元件,保管时应__________。
A面色苍白、大汗、四肢湿冷B头部温度高,体温基本正常C面色潮红、多汗、口唇呈樱桃红色D早期多汗,体温可达40℃以上,继而无汗干热E皮肤苍白、出冷汗、血压下降、体温基本正常属于一氧化碳中毒的临床表现是
在潮湿场所中,插座应采用密封型并带保护地线触头的保护型插座,且其安装高度不低于()m。
一般地讲,证券投资分析师自律性组织的特点有( )。
简述集体经济的概念及其形式。
下列关于中国的航天航空发展说法正确的是:
Inthefollowingarticle,somesentenceshavebeenremoved.Forquestions1—5,choosethemostsuitableonefromthelistA—G
下列数据结构中,能够按照“先进后出”原则存取数据的是
在考生文件夹下,打开文档WORD2.DOCX,按照要求完成下列操作并以该文件名(WORD2.DOCX)保存文档。【文档开始】【文档结束】设置表格居中、表格列宽为2厘米,行高为0.6厘米、表格所有内容水平居中;设置表格所有框线为1磅
题目1:口试老师:CandidateB,youwanttoknowsomethingaboutanapplicantbutyouknowlittleabouthim.AskCandidateA,yoursecr
最新回复
(
0
)