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
2018-08-25
39
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.
From the passage, we learn that Hubble _____.
选项
A、comes from the name of a tourist guide
B、was originated by Galileo
C、is regarded as one of our satellites
D、helped confirm the existence of black holes in 1990
答案
C
解析
第3段首句中的a satellite指的就是该句主句中的主语Hubble,结合第2段第2句说到的哈勃望远镜在370英里的上空绕轨道运行,可以推断选项C是正确的说法。虽然末段首句提到哈勃是“导游”,这是比喻的说法,表明哈勃把人类带进了宇宙新世界,因此A是没有依据的;首段提到了伽利略和望远镜,是为了引入本文的话题,并不表明哈勃望远镜是伽利略发明的,B不正确;原文虽提及“证实黑洞的存在”和“1990年”两个信息点,但它们并不存在如选项D所说的关系。
转载请注明原文地址:https://kaotiyun.com/show/UTH7777K
0
大学英语六级
相关试题推荐
Musicians—fromkaraokesingerstoprofessionalviolinplayers—arebetterabletoheartargetedsoundsinanoisyenvironment,ac
RisingInequalityIsHoldingBacktheU.S.Economy[A]Inannouncinghisrunforthepresidencylastmonth,JebBushhassetan
Attentiontodetailissomethingeveryonecanandshoulddo—especiallyinatightjobmarket.BobCrossley,ahuman-resourceexp
Gulliverhasafriendwhorecentlygaveuphisjobtostudyfor"TheKnowledge",thenotoriouslydifficultprogrammethatLondo
Thereismuchdiscussiontodayaboutwhethereconomicgrowthisdesirable.Atanearlierperiod,ourdesireformaterialwealth
It’sagoodideatoapplysunscreenbeforeheadingtothebeachifyoudon’twanttoburn.Butformarineanimalslikewhales,t
It’sagoodideatoapplysunscreenbeforeheadingtothebeachifyoudon’twanttoburn.Butformarineanimalslikewhales,t
Oncetheydecidedtohavechildren,MiShelandCarlMeissnertackledthenextbigissue:Shouldtheytrytohaveagirl?Itwas
Naturally,inagroupofanimalsasdiverseasthesnakes,andwithsomanyvariedenemies,therearenumerousdefensivereactio
Naturally,inagroupofanimalsasdiverseasthesnakes,andwithsomanyvariedenemies,therearenumerousdefensivereactio
随机试题
膀胱肿瘤的分期标准是根据
1932年,首先提出心电图运动试验可作为冠心病辅助诊断方法的学者是
男性,35岁。服用吲哚美辛10片后胃痛,今晨呕咖啡样胃内容物约250ml来诊,既往无胃病史。则首选的检查
患者,男性,40岁,阑尾切除术后发生粘连性肠梗阻,脐周阵发性疼痛2天,伴恶心、呕吐较频繁,尿少,口渴明显。查体:脉搏96次/min,血压100/70mmHg,腹胀不明显,偶见肠型,脐右侧有轻压痛,肠鸣音亢进。采用禁食、胃肠减压、输液及应用抗生素等非手术治疗
水喷雾灭火系统是利用水雾喷头在一定水压下将水流分解成细小水雾灭火或防护冷却的灭火系统。它适用于()。
下列关于证券经纪业务的说法中,不正确的是()。
一笔借款合同可以选择多种还款方式。()
党对军队的绝对领导是()
Althoughitisusuallyunclearwhostartsthegossip,peopletendtobelieveit.Someresearcherstriedtostudygossips,which
TheGeodesicDome(圆顶层)—theHouseoftheFuture?R.BuckminsterFullerspentmuchoftheearly20thcenturylookingfor
最新回复
(
0
)