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
90
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
RisingInequalityIsHoldingBacktheU.S.Economy[A]Inannouncinghisrunforthepresidencylastmonth,JebBushhassetan
Attentiontodetailissomethingeveryonecanandshoulddo—especiallyinatightjobmarket.BobCrossley,ahuman-resourceexp
Attentiontodetailissomethingeveryonecanandshoulddo—especiallyinatightjobmarket.BobCrossley,ahuman-resourceexp
Educationinmostofthedevelopingworldisshocking.HalfofchildreninSouthAsiaandathirdofthoseinAfricawhocomplet
Thereismuchdiscussiontodayaboutwhethereconomicgrowthisdesirable.Atanearlierperiod,ourdesireformaterialwealth
It’sagoodideatoapplysunscreenbeforeheadingtothebeachifyoudon’twanttoburn.Butformarineanimalslikewhales,t
It’sagoodideatoapplysunscreenbeforeheadingtothebeachifyoudon’twanttoburn.Butformarineanimalslikewhales,t
Oncetheydecidedtohavechildren,MiShelandCarlMeissnertackledthenextbigissue:Shouldtheytrytohaveagirl?Itwas
Drought,tsunami,violentcrime,financialmeltdown—theworldisfullofrisks.Thepoorareoftenmost【C1】______totheireffect
5WeekstoaStress-FreeLife[A]Whowillyoubethisyear?Willyoubeabetter,wiserversionofyourselfbythetimethe
随机试题
焊条的作用有哪些?
Amongallthemalignancies,lungcanceristhebiggestkiller;morethan100000Americansdieofthedisease.Givingupsmoking
医学伦理学的特征之一是
A.直接法B.间接法C.夹心法D.补体结合法E.双标记法用FITC和RB200标记不同的抗体,对同一标本做荧光染色为
以下哪项属于骨折的全身表现?()
下面有关风险产生的因素中,( )是属于组织风险。
假设在20个季度内,股票市场出现上扬的季度数有12个,其余8个季度则出现下跌。在股票市场上扬的季度中,择时损益为正值的季度数有10个;在股票市场出现下跌的季度中,择时损益为正值的季度数为6个,该基金的成功概率为( )。
2×13年12月10日,甲公司与乙公司签订了一项租赁协议,将一栋经营管理用写字楼出租给乙公司,租赁期为3年,租赁期开始日为2×13年12月31日,年租金为600万元,于次年起每年年初收取。相关资料如下:(1)2×13年12月31日,甲公司将该写字楼停止自
分管的领导让你变通处理一笔现金往来的业务。你怎么办?
请在【答题】菜单下选择【进入考生文件夹】命令,并按照题目要求完成下面的操作。注意:以下的文件必须都保存在考生文件夹下。某学校初中二年级五班的物理老师要求学生两人一组制作一份物理课件。小曾与小张自愿组合,他们制作完成的第一章后三节内容见文
最新回复
(
0
)