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
accessory cuboid bone
aerial flares
aileron trim
alfin catalysis
allocation of landownership and land use right
amplifying transformer
aneuryson
area of narrow channel
automated radar plotting system
bacalum
bloodpoisoning
bouquets and brickbats
bourden tube
bretagnes
brucellin test
brutel
Buck's extension
cerrobase alloy
chocolats
clintonite
comedications
date-stamping
deslandres table
dispit
dorpie
Enterobius
ethanolaminephosphotransferase
family betulaceaes
field description
fistulariidaes
fluta alba
four-drum steam hoist
fuel oil and ballast
G-F transformation
geoffroys
glue sniffer
glycollyl
golden aster
Grosbreuil
ground rattlers
GTPases
haplotrichum arundinaria sawada
His's zone
impulsive period
irreducible image
iso development environment
jet-thrust
Jusite
karlstrom
Laportea fujianensis
letterphone
loop impedance determinant
magnetic tape switching unit
make amends for one's crimes by good deeds
McClure-Aldrich tests
methylals
nandikasvara (india)
necrotizing panniculitis
needle warming moxibustion
North Brasilian Ridge
obturator foramen
Onsager, Lars
overpressurised
paraxial ray tracing
peck with sb
piece cutter
pleso
pneumothorax in langerhans' cell histiocytosis
potassium reserve
pseudoheat
psychrotrophic
push-pull tripler
relative tensor field
Self do and self have
Sibbaldia melinotricha
single address order code
snuff it
spacing of movable supports
special conditions of contract
spiral cloud band
stand stretch
stationary baler
takeout food
taling
taxation payment
three-leaved
to have a ball
tool post for rear cross slide
top of the line
tprot
transfinite ordinal number of first class
transpiration stream
treebound
tub of lard
tude
vaccum dyeing
venous fistula
weather information telemetry system
West Millgrove
Westphalians
whale quenching oil
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