时间:2019-02-06 作者:英语课 分类:英语新闻


英语课

   BEIJING, Oct. 26 (Xinhuanet) -- The question, why the first documented supernova was super-sized and grew so fast, has puzzled astronomers 2 for centuries. Now it is solved by US researchers.


  The supernova, an exploded star, was observed in 185 A.D. and documented as a mysterious "guest star" by Chinese astronomers. It was visible for eight months.
  Scientists later found the supernova, 8,000 light years away, was a bigger-than-expected supernova remnant. BBC reported that if the infrared 3 light it emits could be seen by human eyes, it would appear to be as large as the full Moon in the sky.
  Through observations in space telescopes, researchers of a latest study revealed that the explosion took place in a cavity in space, which allowed the star's remains 4 to travel out much faster and farther. The study was published online in the Astrophysical Journal Monday.
  The supernova was "two to three times bigger than we would expect for a supernova that was witnessed exploding nearly 2,000 years ago. Now, we've been able to finally pinpoint 5 the cause," stated Brian Williams, lead author of the study and an astronomer 1 at North Carolina State University in Raleigh.

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.天文学者,天文学家( astronomer的名词复数 )
  • Astronomers can accurately foretell the date,time,and length of future eclipses. 天文学家能精确地预告未来日食月食的日期、时刻和时长。 来自《简明英汉词典》
  • Astronomers used to ask why only Saturn has rings. 天文学家们过去一直感到奇怪,为什么只有土星有光环。 来自《简明英汉词典》
adj./n.红外线(的)
  • Infrared is widely used in industry and medical science.红外线广泛应用于工业和医学科学。
  • Infrared radiation has wavelengths longer than those of visible light.红外辐射的波长比可见光的波长长。
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。
vt.准确地确定;用针标出…的精确位置
  • It is difficult to pinpoint when water problems of the modern age began.很难准确地指出,现代用水的问题是什么时候出现的。
  • I could pinpoint his precise location on a map.我能在地图上指明他的准确位置。
标签: mystery year
学英语单词
air movement table
Alco metal
amaron
ammonium tungstate
angle of valence
Anglo-Swiss
appal
aquagenic pruitus
baggage rack
be confounded with
be confused with
bear panic
behavioralism
bonferroni rule
caravaned
Cesar Estrada Chavez
chain and bucket elevator
Chinese ginger
collar rim
conic acid
cotton-dust
crura ampullaria
cumulus folicle
dermateen
do not have a clue
drowned shoreline
duanes
echinus esculentuss
excretory products
extended coverage clause
fessor
Fin.
fire-plow
folded thrust
Gee-Herter-Heubner disease
grid owner
Guyanan
handicappings
handsy
hemal arches
high rollers
Hollinidae
indirect radiography
josephinite
maturely dissected plain
Meckel diverticulum
median nnsal process
merchandise planning
Moeller's reaction
muna
Murano
narrow sea
night-shade
Nikolai
nonfinitely generated projective module
nonhemodynamic
number eight wire
ordering by merging
orridges
palpal coxa
pcmc
pick take up the thread of
pomerene
prodigal sons
psychohistories
Rails-to-Trails Conservancy
ranular
rationalized brightness
reflection-character analysis
retronphage
ring iodination
roller skate
round reducer
s-bend
Saxifraga parkaensis
scrollery
sebates
side coaming
significavit
simple balanced aileron
simple harmonic electromotive force
size distribution of firms
somnolenmtia
square kelly
sturm-liouville boundary condition
swivel rowlock
syntectoid
tailplane area
Tarkuch
technologie
three-way callings
timing toothed pulley
truck-tpe switchgear
tube-noses
umbral calculus
uncultivatable
underconstable
uniaxial strength
upromise
valued policy law
visible file
water release tunnel