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 serum protein
act of exceution
acute dose
aircraft reactor experiment
al-gashey
alinements
alkali electrolyte
alternate position
amblyeleotris ogasawarensis
angle straggling
antibaric flow
art-history
being a monitor
bengore hd.
circuit feedback
cluster headaches
coil grading
coluber
corticostriate
Dmitrov
dog-ass
eccentric reduction
El Escorial
film transporting system
fructus toosendan
genus Parmelia
genus stenochlaenas
gervers
gloeocystidiellum porosum
glutless
gnaphalium involucratum ramosum
goods platform
guided participation
Hangal Nuur
Helmholtz-Keteller formula
hot for
incompleteness of formal system
indoorsman
inebriety
interspaced
jump airspeed
kale cutter
labiologic
lazaris
liquid-phase epitaxy
majority-minority
market surveillance policy
microbarogram
microtome method
microwave early warning
Middle Saxon
militariness
miniature components
modernization loan
monepiscopacy
mould frame
Murayama-shi
nanohoneycomb
natural ovulation
neoguanine
nobbed
nourishing the heart
o'guinn
observin'
operating decision
organic fiber reinforced composite
orthobicupola
p-type doping
Pahār Khel
pantisocrats
pare clip the claw of
perilymphangial
petropolitical
Pittosporum parvilimbum
postacceptance
postpatriarchy
proto-Thames
protodiastolic
rack and ruin
raise-up frame
ranasinghe
regional pact
repeals
ruminative
seaplane hull
second selector
slag desledger separator
spinning mill
still room
swirling eddy
taking water
target span
Tempil alloys
Titanesses
tongue kiss
total output value
trichomania
Tsanchu
turbulent separation
Ulawa I.
viewres
water loving plant