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
Abkhasians
air pollution occurrence
aural radio range
bishomo-gamma-linolenic acid
bonnin cleaner
burrito
caseln
cerise
chilling tank
chokes down
circular arc
coaxial flexible cable
colleger
control stand cover
costellising
crossed beam method
dacryocanaliculitis
disinfection of books
dissensious
distance marder
dolphin fish
economic opportunities for
Endocarpon
ethyl arsine oxide
evacuating device
faintling
Falope ring
fault piercing
file extention
flotels
fund audit
furcations
hasinger
hematosin
hepatic odor
hummocky cross stratification
immunosilent
income benefit insurance
Indianisation
intrinsic light
ixias pyrene insignis
John Addington Symonds
Kosters interferometer
lamellar shutter
laryngeal pharynx
ligia
logoscope
Lom Convention
mail-bomb
main-lobe solid angle
mana
Marija Bistrica
Melampyrum klebelsbergianum
mendiant
metapsychologies
Mission Indian
MOCAM
Moyagee
multibridge
multisubstrate analog
near-neighbour
neutral contact
nightstands
nonantihypertensive
nuclear-powered ships
oriflamme
Palaeopneustidae
play-in
PLD1gene
polarizing light
posterior condyloid foramina
protophase
pull something to pieces
radial collateral artery
radial hole
re-use
reducibility criterion
roller-skates
running on heavy fuel oil
sample-and-hold amplifier
scoring hit
semi-enclosed impeller
set tone
solution growth
spermatocrit
spoil for
squiffy
static pressure sensor
subjects of law
sunlight flavour
tail puller
ternary liquid systems
ticket-writer
traffic beams
transfer bus
unit power mounting
vapor-bath
Vat Golden Yellow GK
vv. dorsales penis subcutane?
you can't get a quart into a pint pot
Zwelithini