时间:2019-01-08 作者:英语课 分类:Scientific American(五)月


英语课

 This is Scientific Americans 60 second Science, I am Cynthia Graber, This will just take a minute.


 
Scientists are looking for Earth-like planets around other stars. But one way to limit the search can be to figure out where an Earth-like planet cannot exist and eliminate those types of systems.
 
In a new study, astronomers 1 turned their attention to so-called hot Jupiters. These are Jupiter-sized planets that have an orbit of only about three days. The scientists looked at 63 hot Jupiters to see if they could find evidence for any nearby Earth-like planets. They found none.
 
But it could be that the companion planets are too small in size or mass or just aren’t detectable 2 with the current techniques. So the researchers then turned to hot Neptunes, and warm Jupiters—these are Jupiters with slightly longer orbits. They found only 2 potential nearby planets among 222 hot Neptures. And of the 31 warm Jupiters, five showed evidence of a companion. The findings are in the Proceedings 3 of the National Academy of Sciences. 
 
The current theory is that hot Jupiters formed and then migrated in towards their stars. The researchers say that the migration 4 might have “disrupted the formation of Earth-like planets.” Good thing our Jupiter kept its cool.
 
Thanks for the minute for Scientific Americans 60 second Science, I am Cynthia Graber.

n.天文学者,天文学家( astronomer的名词复数 )
  • Astronomers can accurately foretell the date,time,and length of future eclipses. 天文学家能精确地预告未来日食月食的日期、时刻和时长。 来自《简明英汉词典》
  • Astronomers used to ask why only Saturn has rings. 天文学家们过去一直感到奇怪,为什么只有土星有光环。 来自《简明英汉词典》
adj.可发觉的;可查明的
  • The noise is barely detectable by the human ear.人的耳朵几乎是察觉不到这种噪音的。
  • The inflection point at this PH is barely detectable.在此PH值下,拐点不易发现。
n.进程,过程,议程;诉讼(程序);公报
  • He was released on bail pending committal proceedings. 他交保获释正在候审。
  • to initiate legal proceedings against sb 对某人提起诉讼
n.迁移,移居,(鸟类等的)迁徙
  • Swallows begin their migration south in autumn.燕子在秋季开始向南方迁移。
  • He described the vernal migration of birds in detail.他详细地描述了鸟的春季移居。
标签: SSS 托福素材
学英语单词
action pattern
advocacy tank
albulid
anamorphotic attachment
antistreptolysin o
ASIM,A.S.I.M.
Astrida
backup governor
bakerly
ballet british colombia
belt-type exhauster
bernoulli's relations
biotinylated
BTTT
butadiene-styrene copolymer
call analyzer
capacitive two-terminal element
Chaldees
chathetometer
client isolation
comma shaped cuttings
contempt of legislature
convertile
Deep South
dressin
dsDNA
e-i pick off
Eppelborn
ethnise
ethyl triphenyl silicane
exofacial
forensic hematology
fossa interpeduncular
Guebers
hablots
hauter
height of baffle plate
holotrichia sauteri sauteri
hypofluorescence
impregnate with
insinuated
insular convolution
invitation and submission of tender
kaoliang oil
leglessly
limacella glioderma
local grid
lodgment
long-time fatigue strength
Loudia Ouolof
Medskog
micropluviometer
mileposting
millifarad
mimotope
mispractice
nacoma
neutron-irradiated bromobenzene
nitinols
octin
opinion poll
ordaining
orman
Orussidae
overelaborateness
overoxidations
p. and h.
parking and maintenance room in the bulldozer garage
passenger van
Patiala
picrotoxin
pins and needle
playing hardball
quarter-band filter
rachen
rated power of solar array
reflexa
roboticization
rotor forging
salesclerks
seagates
security breaches
seize with both hands
sharp ear hook
shawon
slowcoach
stress-rupture
sun-trap
synical
tag card reader
taking-up lever bush
the tragic
thread groove
tilia mofungensis chun et wong
typhoid spine
ultrafashiinable
ur(in)ometer
vapor hood
wo'n't
work anchor
yeley