时间:2019-02-17 作者:英语课 分类:英文语法词汇


英语课

   美国太空总署(NASA)于今日凌晨零时宣布发现首颗太阳系外位于“宜居带”上体积最接近地球大小的行星(代号为“开普勒-452b”),这是人类在寻找太阳系外“第二地球”道路上的重要里程碑。


  请看外媒报道:
  NASA said that its Kepler spacecraft has spotted 1 "Earth's bigger, older cousin": the first nearly Earth-size planet to be found in the habitable zone of a star similar to our own.
  美国太空总署(NASA)宣布,开普勒太空望远镜发现了“地球的大表哥”,这也是首颗在“宜居带”发现的最接近地球大小的行星。
  宜居带
  “宜居带”也叫“适合居住带”,可以用英文habitable zone /Goldilocks zone表示,其实就是指恒星距离适中,水能以液态形式存在、温度适中的区域。habitable 表示“适合居住”的,如适居行星 (habitable planet )。
  NASA发现的这颗系外行星(exoplanet)代号为Kepler-452b,位于距离地球1400光年(14-hundred light-years )的“天鹅座”( constellation 2 Cygnus)方向,体积只比地球大60%,年龄大约在60亿岁,比太阳大15亿岁。NASA宇航员称,这是目前为止他们发现的最接近地球的“孪生星球”(the closest twin to Earth)或者说地球2.0(the Earth 2.0)。
  Kepler-452b像地球一样围绕类太阳恒星(sun-like star)运转,公转周期为385个地球日。该行星可能有适合生命存在的液态水。但目前还没有证据证明该行星存在生命。开普勒太空望远镜于2009年发射升空,旨在收集和传输潜在类地行星(Earth-like planet)的数据。距今为止,“开普勒”已经确认了超过1000颗像地球那样绕恒星运行的行星以及3000余颗候选行星。

adj.有斑点的,斑纹的,弄污了的
  • The milkman selected the spotted cows,from among a herd of two hundred.牛奶商从一群200头牛中选出有斑点的牛。
  • Sam's shop stocks short spotted socks.山姆的商店屯积了有斑点的短袜。
n.星座n.灿烂的一群
  • A constellation is a pattern of stars as seen from the earth. 一个星座只是从地球上看到的某些恒星的一种样子。
  • The Big Dipper is not by itself a constellation. 北斗七星本身不是一个星座。
标签: 单词
学英语单词
abrupt contrast border
altimum
artalotrine
artificial menstrual cycle
Bidzhar
Bisztynek
book reviewer
brass bush connecting arm
broad red clover
bubble statoscope
capillary buret
cash in transit
chemically-induced
conflicting views
cordierite-norite
cryptobiont
cumulative factor
cyclical digit code
definite iteration
deturbate
diaphragm nozzle
dilatancy hardening
divisonal instruction
dombeck
elatigenin
electron-photon shower
elimination by comparsion
emergency-valve
execution priority
extended dislocation
feel low
finance market
fine sandy loam
fisheries
flood-tide
free-hand-drawing
fuel piping system
gate-money
heat treatable steel
ileo-colic orifice
ill-treatments
infant food
inspected approved
issue of a bill of exchange
jacket heating
kissier
Kivotos
knitchet
kristopher
Le Vent, Arroadissement
Liangqiu (S34)
logic element
lohn
lorry rim
market ratio
multi-fuel-fired boiler
namekoes
nopinene
outhold
overall dimentions
periodic envelope
persecutory delusion
phase polymorphism
phiogosin
phytohaemagglutinins
Pirie Peninsula
play by electronic mail
Privately operated mines
proteism
provang
quasi-shear wave
quotient-difference algorithm (qda)
Radar target simulator.
Red-Fox alloy
relaxed muscle
renovation of natural resources
restricted view
Rhamnus wumingensis
right residue class
rise and fall milling machine
Roesbrugge
Sangli
Schizophyta
sconcing
shaper and planer tool
single phase line
social acceptability
staffgetting
staggered freezing
stained mica
stream lined body
sub-boundary
submarine's
surface broaching tool
sweep current
third sackers
uniaxial strain gauge
unviolate
upper character
valencia oranges
water-repellent container
West Midlands County