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
68
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://kaotiyun.com/show/f5G7777K
0
大学英语六级
相关试题推荐
Badweather,badfood,andgrumpy(脾气暴躁的)people.That’swhatseemstocometomindfirstwhensomepeoplethinkaboutBritain.
Corporationsasagroupofferavarietyofjobs.Mostlargecompaniessendpeopletocollegestointerviewgraduatingstudentsw
A、$28for12recordsandavase.B、$28for12records.C、$25for12records.D、Nothing.B根据对话,最后店主让步到$28卖出12张唱片,还要送顾客一个花瓶,但顾客说st
A、HehadthoughtChicagowasayoungcity.B、HehadthoughtthatChicagowasverylarge.C、HehadthoughtthatChicagoshouldbe
2011年是中国城市化(urbanization)进程中的历史性时刻,其城市人口首次超过农村人口。在未来20年里,预计约有3.5亿农村人口将移居到城市。如此规模的城市发展对城市交通来说既是挑战,也是机遇。中国政府一直提倡“以人为本”的发展理念,强调人们以公
A、ProfessorBurkewilldistributecalculatorstothestudents.B、Calculatorswillbeusefulintheclass.C、Statisticalcalculat
A、Sheneedstohaveherhaircutmoreoften.B、Shehasn’thadahaircutrecently.C、Themanshouldn’tjokeaboutotherpeople’s
A、Passthecoffeetotheman.B、Haveasmallcupofcoffee.C、Gowithoutcoffee.D、Gooutforcoffee.C这道题涉及欧美人的生活习惯,如果你是在咖啡厅等场所
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
徐霞客是明朝著名的地理学家(geographer)、旅行家和探险家。他一生周游考察了16个省,足迹几乎遍及全国。他在考察的过程中,从来不盲目迷信书本上的结论。相反,他发现前人研究地理的记载有许多不很可靠的地方。为了进行真实细致的考察,他几乎全靠双脚旅行。为
随机试题
走新型工业化道路要处理好哪些关系?
Amongallthemalignancies,lungcanceristhebiggestkiller;morethan100000Americansdieofthedisease.Givingupsmoking
A.肱二头肌、旋前圆肌B.桡侧伸腕长肌和短肌C.髂腰肌D.股四头肌E.胫骨前肌L4运动神经平面的关键肌为
布莱克分类窝洞考虑的充填材料是
市场投资组合的p系数等于( )。
财政政策和货币政策的差异主要体现在()。
基金管理公司及基金托管银行聘用高级管理人员,必须具有5年以上基金、证券、银行等金融相关领域的工作经历及与拟任职务相适应的管理经历。()
在某城市中,有60%的家庭订阅某种日报,有85%的家庭有电视机。假定这两个事件是独立的,今随机抽出一个家庭,所抽家庭既订阅该种日报又有电视机的概率是:
MargaretSangerandBirthControlMargaretSanger,anAmericannurse,wasthefirsttostartthemodernbirthcontrolmovemen
Afterreading________ofbooksbygreatauthorsforsometime,theboydecidedtogoontoreadtheoriginals.
最新回复
(
0
)