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
2019-06-23
64
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.
The astronomers felt that the first images sent back by Hubble after the rescue were _____.
选项
A、extremely clear
B、a bit bewildering
C、infinitely valuable
D、enormously diverse
答案
A
解析
第4段末句中的marveled at razor-sharp views表明天文学家对哈勃望远镜拍回来的图片的清晰度感到很惊讶,由此可见,他们应认同选项A。该句中虽有dizzy一词,但该词在文中表明哈勃望远镜拍回来的照片让科学家们眩目,它没有“使人迷惑”的意思,B不正确;该句末的eternity指的是哈勃望远镜能让科学家看到宇宙的深处,与图片的价值无关,C不正确;哈勃望远镜拍到了星球爆炸和星系撞击的图片,但这与enormously diverse(千变万化)相差还甚远,D错。
转载请注明原文地址:https://www.kaotiyun.com/show/mAX7777K
0
大学英语六级
相关试题推荐
A、Takinggoodcareofourchildrentomakethemfeelhappy.B、Findingcolorfulextracurricularactivitiesforourchildren.C、Ed
A、Awaytopreventabonedisease.B、Anunderstandingbetweenbonetissueandothertissue.C、Awaytounderstandhowspecialize
Depressionisoneofthedarkdemons(恶魔)ofadolescence.Upto1in12Americanteenagersisaffected,accordingtotheNationa
Afterdecadesofdecline,theshareofmotherswhostayhomewiththeirchildrenhas【C1】______risenoverthelastseveralyears
A、TheUSpopulationdoesn’tconsistofwhiteEuropeandescendantsonly.B、AsiantouristscanspeakEnglishaswellasnativespe
A、Itwillbecomelesspopularthanithasbeen.B、Itwillbereformedinthenearfuture.C、Itwillbemorepopularthanbefore.
Cryingishardlyanactivityencouragedbysociety.Tears,betheyofsorrow,anger,orjoy,typicallymakeAmericansfeeluncom
BernardBailynhasrecentlyreinterpretedtheearlyhistoryoftheUnitedStatesbyapplyingnewsocialresearchfindingsonthe
Onenightintheearly1600sGalileogottiredofusingthenewfangled(新花样的)telescopetospotshipsandpointedittotheheav
随机试题
盐酸氯丙嗪司可巴比妥
实现“人人享有卫生保健”目标的关键是
王某为其子王强(现年15岁)投了人身保险,至今已缴纳保险费满3年,受益人为其妻刘某和其母赵氏。以下说法正确的是:()
根据我国仲裁法的有关规定,下面关于仲裁机构组织性质的说法,正确的是( )。
上海证券交易所和深圳证券交易所在刚开展债券回购业务时,其品种的设置是()。
在我国,税法的正式渊源包括()。
某普通合伙企业经营期间,吸收甲入伙。甲入伙前合伙企业已负债20万元。甲入伙1年后退伙,在此期间合伙企业新增负债10万元。甲退伙后半年,合伙企业解散,以企业全部财产清偿债务后,尚有80万元债务不能清偿,根据合伙企业法律制度的规定,下列关于甲承担清偿责任的表述
喜欢看书,知道看书的基本方法,能初步看懂单幅儿童图画书的主要内容是对()年龄段的要求。
NarratorListentoatalkbetweentwostudents.Nowgetreadytoanswerthequestions.Youmayuseyournotestohelp
FlatswerealmostunknowninBritainuntilthe1850swhentheyweredeveloped,alongwithotherindustrialdwellings,forthela
最新回复
(
0
)