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
58
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/QTH7777K
0
大学英语六级
相关试题推荐
RisingInequalityIsHoldingBacktheU.S.Economy[A]Inannouncinghisrunforthepresidencylastmonth,JebBushhassetan
RisingInequalityIsHoldingBacktheU.S.Economy[A]Inannouncinghisrunforthepresidencylastmonth,JebBushhassetan
Thereismuchdiscussiontodayaboutwhethereconomicgrowthisdesirable.Atanearlierperiod,ourdesireformaterialwealth
Drought,tsunami,violentcrime,financialmeltdown—theworldisfullofrisks.Thepoorareoftenmost【C1】______totheireffect
Wesometimesthinkhumansareuniquelyvulnerabletoanxiety,butstressseemstoaffecttheimmunedefensesofloweranimalsto
Naturally,inagroupofanimalsasdiverseasthesnakes,andwithsomanyvariedenemies,therearenumerousdefensivereactio
A、Theyarehappyaboutit.B、Theyarecuriousaboutit.C、Theyaredisappointedwithit.D、Theyarenotinterestedinit.A
Onenightintheearly1600sGalileogottiredofusingthenewfangled(新花样的)telescopetospotshipsandpointedittotheheav
Onenightintheearly1600sGalileogottiredofusingthenewfangled(新花样的)telescopetospotshipsandpointedittotheheav
Onenightintheearly1600sGalileogottiredofusingthenewfangled(新花样的)telescopetospotshipsandpointedittotheheav
随机试题
在第二审刑事判决书上签名的人员不包括
华支睾吸虫的诊断阶段是
患者,女,34岁。尿频,尿急,尿时灼痛已3天,偶有恶寒发热,口干喜饮,大便秘结。舌红,苔薄黄,脉濡数。实验室检查:尿常规示白细胞满布视野,红细胞0~5个/HP,尿沉渣涂片未找到细菌。其治法是
高位小肠梗阻患者除腹痛外,主要症状是
变配电所直流操作电源中,所谓“端电池”是指()。
微分方程yy’’一2(y’)2=0的通解是()
如果个人认为自己的信用报告中反映的个人养老保险金信息与实际情况不符,可以直接向()核实情况和更改信息。
设立外商投资旅行社应当具有不少于()的注册资本。
我们党是靠革命理想和铁的纪律组织起来的马克思主义政党,纪律严明是党的光荣传统和独特优势。严明党的纪律,首要的就是:
中国汽车行业协会公布的2009年4月份中国汽车销售数据显示,在其他国家汽车销售量进一步疲软的情况下,国内乘用车销售量却持续上升,当月销量已达83.1万辆,比3月份增长7.59%,同比增长37.37%。乘用车细分为基本型乘用车(轿车)、多功能车(M
最新回复
(
0
)