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
93
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
Depressionisoneofthedarkdemons(恶魔)ofadolescence.Upto1in12Americanteenagersisaffected,accordingtotheNationa
Depressionisoneofthedarkdemons(恶魔)ofadolescence.Upto1in12Americanteenagersisaffected,accordingtotheNationa
Directions:Forthispart,youareallowed30minutestowriteashortessayentitledTheImportanceofSocialPractice.Youshould
A、Landformation.B、Geologicfeature.C、Gooddating.D、Fundamentaltechnique.C
Cryingishardlyanactivityencouragedbysociety.Tears,betheyofsorrow,anger,orjoy,typicallymakeAmericansfeeluncom
Cryingishardlyanactivityencouragedbysociety.Tears,betheyofsorrow,anger,orjoy,typicallymakeAmericansfeeluncom
A、Therelationshipbetweenpaintingandsculpture.B、Theideasbehindanartist’swork.C、Thepracticalvalueofaworkofart.
BernardBailynhasrecentlyreinterpretedtheearlyhistoryoftheUnitedStatesbyapplyingnewsocialresearchfindingsonthe
Onenightintheearly1600sGalileogottiredofusingthenewfangled(新花样的)telescopetospotshipsandpointedittotheheav
A、Satisfied.B、Enthusiastic.C、Disappointed.D、Indifferent.C女士谈到,男士一定见证了公司很多的变化,男士回应说绝大部分的变化都是使事情变得更加糟糕。故选C。
随机试题
2015年,某国商品出口总额249211亿美元,比上年增长了27.8%,进口总额437827亿美元,比上年增长了35.9%。从地区的情况来看,东部地区出口总额226113亿美元,比上年增长27.5%,进口总额225096亿美元,比上年增长35.9%;中部地
一个大系统的通行字的选择原则为:________、________、抗分析能力强。
患者,男,34岁。打网球时小腿后突然出现疼痛,患者自感“被击中”小腿。查体:无跛行,蹬足无力,被动活动正常,小腿后侧距足跟6cm处压痛。影像学检查下肢骨正常。为明确诊断应行Thompson试验,其正确的体位应是
患者,男,58岁。因尿失禁留置导尿管。引流通畅但尿色浑浊,给予抗感染治疗。护理方面应注意
不适合感应电疗法的是
A.癌B.瘤C.肉瘤D.临界瘤E.纤维瘤
水泵发生气蚀,还会产生()等现象。
募集机构应当对所销售私募基金进行风险评级,以下表述正确的是()。Ⅰ.自行评级,需要建立科学有效的私募基金风险评级标准和方法Ⅱ.自行评级,视募集机构自身情况而定是否需要建立私募基金风险评级标准和方法Ⅲ.委托第三方机
A公司是美国的一家高科技公司。创立之初,主要开发和销售个人电脑,截至2015年致力于设计、开发和销售消费电子、计算机软件、在线服务和个人计算机。公司采用特殊的标识,而这个标识象征着A公司的企业文化与设计理念:偏执,创新,注重智慧,朝气,富于生命力。这种企业
阿炳是我国民间音乐家的典型代表,下列作品属于他创作的是()。
最新回复
(
0
)