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
(1) Viewed from a star in some other corner of the galaxy, Earth would be a speck, a faint blue dot hidden in the blazing light
(1) Viewed from a star in some other corner of the galaxy, Earth would be a speck, a faint blue dot hidden in the blazing light
admin
2005-12-10
94
问题
(1) Viewed from a star in some other corner of the galaxy, Earth would be a speck, a faint blue dot hidden in the blazing light of our sun. While our neighbors Venus and Mars would reflect a fairly even glow. Earth would put on a little show. Earth’s light would brighten and dim as it spins, because oceans, deserts, forests and clouds which are all too small to be seen from such a distance, reflect varying amounts of sunlight. The variations, it turns out, are so strong and distinctive that surprising amount of information could be taken from a simple ebb and flow of light. Scientists at Princeton University and the Institute for Advanced Study conducted a detailed study of Earth’s reflections as a way for human scientists to learn about distant planets that may be like our own.
(2) "If you looked at our solar system from far away, and you looked at the terrestrial planets Mercury, Venus, Earth and Mars, one of the quickest ways to see that Earth is unique, which is by looking at the light curve," said Ed Turner, professor of astrophysics and a co-author of the study. "Earth has by far the most complicated light curve." The standard thinking in the field had been that most of the information about an Earth-like planet would come from spectral analysis, a static reading of the relative component of different colors within the light, rather than a reading of changes over time. Spectral analysis would reveal the presence of gases such as water vapor, carbon dioxide and oxygen, in the planet’s atmosphere. Looking at the change in light over time does not replace spectral analysis, but it could greatly increase the amount of information scientists could learn, said Turner. It may indicate, for example, the presence of weather, oceans, ice or even plant life.
Spectral reading of the light reflected by an Earth-like planet ______.
选项
A、can tell us the components of that planet’s atmosphere
B、can locate oceans and forests on that planet
C、can show what the weather on that planet is like
D、is the quickest way to study its light curve
答案
A
解析
转载请注明原文地址:https://kaotiyun.com/show/9HIO777K
0
考博英语
相关试题推荐
Readthetextbelowaboutcustomerloyalty.Inmostofthelines(34-45),thereisoneextraword.Itiseithergrammaticallyin
Readthearticlebelowabouttheimportanceofthedivisionoflabour.Choosethebestwordorphrasetofilleachgapfrom
Readthearticlebelowaboutmarketingsegmentation.Inmostofthelines(34-45),thereisoneextraword.Iteitherisgram
Lookatthestatementsbelowandthetextaboutthemarketingprincipleontheoppositepage.Whichsection(A,B,CorD)doe
ReadthemagazinearticlebelowaboutAndySeymour,theChiefExecutiveofachainofbookstorescalledBookroom,andthequest
MakingUseoftheTradeShowProblems:No.1Howtogettherightpeopletocommunicatewiththe【16】No.2Howtofi
●Lookattheorganizationplanbelow.Itshowsthedifferentdivisionsofamanufacturingcompany.●Forquestions6--10,Where
WorriedSpanishlemongrowershave(29)upaspecialcommissiontotryto(30)theproblemsofadecliningmarketandcompet
Althoughvocalcordsarelackingincetaceans,phonationisundoubtedlycenteredinthelarynx.Thetoothedwhalesorodonto
Whatarethechancesthatwewillencountersomealienformoflife,asweexplorethegalaxy.Iftheargumentaboutthetimesc
随机试题
在近端小管中滤出的HCO3-被重吸收的主要形式是
内服涌吐热痰,研末吹鼻引去湿热的药是
在规划咨询中应根据发展的()来确定开发方案。
一个报关单编号最多可打印( )项商品。
—Iwasdisappointedthatyoudidn’tcometomypartylastnight.—Iwish______occupiedthen.
[*]
(2013年上半年)在项目采购中经常使用询价过程,询价过程的输出不包括(61)。
在软件设计中不使用的工具是
Whatpercentageoftheworld’sknownpetroleumreservesdoesKuwaithave?
A、Theywanttoshowtheirgenuinesympathy.B、Theyhavehadsimilarpersonalexperiences.C、Theydon’tknowhowtocopewiththe
最新回复
(
0
)