时间:2019-01-02 作者:英语课 分类:60秒科学


英语课

A hypervelocity star appears to be the remains 1 of a three-star system, one star of which was digested by the Milky 2 Way's black hole, with the other two being combined and hurled 3 away.


Here’s what scientists think happened, oh, about a hundred million years ago. There was this three-star system. The three linked stars were strolling through the Milky Way but got too close to the giant black hole at the center. The hole swallowed one of those stars and hurled away the other two. Those two careening stars merged 4 to form one super-hot, incredibly fast-moving blue star, which is now on the very outskirts 5 of the Milky Way.


And here’s how scientists came up with that dramatic tale, which they just published in Astrophysicial Journal Letters.


They discovered what they call a hypervelocity star, which moves three times faster than our sun does through the galaxy 6. According to new information provided by the Hubble telescope, the star originated deep within the Milky Way.


The scientists used the Hubble to figure out the direction of the star’s travels and the distance from the galactic center, along with the star’s mass, age and speed. Its unusual attributes give rise to the idea that one star was swallowed and transferred its momentum 7 to the other two, which transformed into a blue superstar. Hurtling through the galaxy, faster than a speeding sun

 



n.剩余物,残留物;遗体,遗迹
  • He ate the remains of food hungrily.他狼吞虎咽地吃剩余的食物。
  • The remains of the meal were fed to the dog.残羹剩饭喂狗了。
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。
v.猛投,用力掷( hurl的过去式和过去分词 );大声叫骂
  • He hurled a brick through the window. 他往窗户里扔了块砖。
  • The strong wind hurled down bits of the roof. 大风把屋顶的瓦片刮了下来。 来自《简明英汉词典》
(使)混合( merge的过去式和过去分词 ); 相融; 融入; 渐渐消失在某物中
  • Turf wars are inevitable when two departments are merged. 两个部门合并时总免不了争争权限。
  • The small shops were merged into a large market. 那些小商店合并成为一个大商场。
n.郊外,郊区
  • Our car broke down on the outskirts of the city.我们的汽车在市郊出了故障。
  • They mostly live on the outskirts of a town.他们大多住在近郊。
n.星系;银河系;一群(杰出或著名的人物)
  • The earth is one of the planets in the Galaxy.地球是银河系中的星球之一。
  • The company has a galaxy of talent.该公司拥有一批优秀的人才。
n.动力,冲力,势头;动量
  • We exploit the energy and momentum conservation laws in this way.我们就是这样利用能量和动量守恒定律的。
  • The law of momentum conservation could supplant Newton's third law.动量守恒定律可以取代牛顿第三定律。
标签: 三星系统
学英语单词
abnormal observation
accesible
acoustic emission count
air corridor
aircraft nuclear propulsion program
Albert Francis Charles Augustus Emmanuel
anticipated payment
Architects Regional Council Asia
assumed ground plane
auto photoelectric effect
blanket amnesty
blue tone
cap-binding protein
Ceterachopsis
cipemastat
circulation around closed circuit
circulation rate
combination lever bushing
continuous industrial viscometer
Cossacks
couths
Cowley
cumbrias
data storage control
design traffic capacity
dilatation cyst
Donkerbroek
doublerow ball bearing
dwelling standard
ecolinguistic
electrical grinding machine
emission standard of smoke and soot
endogenous damp
fibrinous degeneration
focal vitreous degeneration
fosterment
free denticle
frequency modulating blade
frozen-stress photoelasticity
furnace irregularity
gib and cotter
glandulae sebaceaes
henkin
Hypericum filicaule
impact damage
Internet privacy
island chains
jerk a gybe
Katayama nosophora
khrennikov
left-handed vessel
living patterns
Maimonideans
make up a prescription
mispronouncing
mixed Portland cement
molecular probe
music downloads
nanoohms
needle bed
nonsiliceous
Næsbyhoved Broby
object of study
on the windy side of
optimal universal code word set
outsings
Paunz' tests
preantepenult
preferred noise criteria curve
public key certificate
pull-through operation
pullorum diseases
ravelings
resendable
reverse-blocking pnpn-type switch
revolutionally
Satinazid
second harmonic generator
segment attribute
ship stuff
Simple Simons
spectrum analyzer system
spot exchange transaction
star height
store battery
super tyre
surface-active impurity
Tasman Gl.
thermal circulation
tostone
trigonometric sum
Tröllakirkja Snjöfjöll
Tuttle's proctoscope
uncledom
underwater swimming
unloading compliance
valve envelope
waste collector pump
waterworn stone
written standard
Youkounkoun, Rég.Adm.de