时间:2019-02-17 作者:英语课 分类:英语新闻


英语课

     BEIJING, May 20 (Xinhuanet) -- Scientists have discovered a Jupiter-sized exoplanet that is completely unbound from a host star, according the scientific journal "Nature" published Thursday.


    The research was conducted by astrophysicists from Osaka University in Japan.
    Using the technique called "gravitational(重力的) microlensing", scientists turned their telescopes towards the centre of the Milky 1 Way and detected this "lonely planet" moving in a extremely large orbit, which suggested it does not connect to any solar system.
    Then they estimated the total number of such wondering planets could be as many as 400 billion, based on the detection efficiency. This number far outnumbers the main-sequence stars such as our Sun.
    "This is an amazing result, and if it is right, the implications for planet formation are profound," says astronomer 2 Debra Fischer at Yale University in New Haven 3, Connecticut.
    And scientist began to consider the possibility that liquid water could exist on this kind of unbound planets. "That might be an attractive possibility for life," said David Stevenson, a planetary scientist at the California Institute of Technology.(本文由在线英语听力室整理编辑)

adj.牛奶的,多奶的;乳白色的
  • Alexander always has milky coffee at lunchtime.亚历山大总是在午餐时喝掺奶的咖啡。
  • I like a hot milky drink at bedtime.我喜欢睡前喝杯热奶饮料。
n.天文学家
  • A new star attracted the notice of the astronomer.新发现的一颗星引起了那位天文学家的注意。
  • He is reputed to have been a good astronomer.他以一个优秀的天文学者闻名于世。
n.安全的地方,避难所,庇护所
  • It's a real haven at the end of a busy working day.忙碌了一整天后,这真是一个安乐窝。
  • The school library is a little haven of peace and quiet.学校的图书馆是一个和平且安静的小避风港。
标签: researcher planet
学英语单词
Adabīyah, Ra's
adjustable blowdown
admissible normal subgroup
agglutinins
ansclasimeter
Apocryphas
appointment of agent
as a system
azaspirostane
be offhand with sb
Beruas, Sungai
bipolar fabrication
blood banks
bradypterus seebohmi
canbyite (hisingerite)
cattle class
center weight governor
central ballast control station
Chernyayevka
conjugases
CONNECTED WITH
depositional traps
despitefulness
dichaetomyia pallitarsis
direct impact
domain decomposition
earbashed
electronic controlled acoustic shadow system
engraved roller
exalbuminous seed
export declaration
fertiloscopies
filled composite
fluminose
forgottons
four dimensional force
franzi
free garbage routine
froth depth
full-track laying vehicle
gastlet
group conflict
guanidotaurine
helichromy
horizontal automatic frequency control
horn collector
imaginary atom
interpretation of statutes
kibe
La Pobla de Claramunt
lactard
loan bears interest
mentre
metal bead
mid-oceanic
Minamikyushu
musculus retractor pinnae analis
mustow
natural-kinds
navigational radio direction finder
nepa
neutral scouring
oxihemogra
pannier condenser
Pedicularis honanensis
pinosylvine
polarizing screen
preferential segregation(rhodes 1942)
processor-sharing discipline
pulmonary pleurisy
pulse duration modulation
pulse-code moduonlati
quarred
race bill
rail gap adjuster
readathon
redundant phase encoding
resonation
resuscitation moss
retire shipping documents
rhetoricates
rib
rouge red glaze
Russianization
SCOPELOSAURIDAE
second boer war
sedimentary framework
self-secure
serophen
signalwomen
sparkler filter
tiddy oggy
time-depth curve
trety
volatile display
volume electromagnetic energy
wait a minute
warmsup
watchman's rattle
x value
zoltan
zone of increasingly favorable humidities