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
3-(p-chlorophenyl)butanoic acid
a bit of a
academic relations
accidental movement
acetochlor
actualite
Aidia shweliensis
al habbaniyah (habbaniya)
amorphous catalyst
anti-replay
arsonous acid
attitude problem questionnaire
barrister called to the bar
blacklung
bullington
butterfly bush
camel wool
cascade radiation
castaings
cloney
cloudcapt
clum
combination decision
concentered
continuous gas carburizing furnace
core switch circuit
CPU section
crack snacker
decalcomania
defense technology
early-evenings
elanors
elbow hang
emigrant
femke
fibre type premoulded joint
flux gate magnetometer
galabiah
genus Lagarostrobus
guanines
guianense
gyrocone
hand ax
herba epimedii
high-frequency drier
Himalayan blunder
horizon system
knitmesh
Leucophyllum
lignum juniperi
Lord High Commissioners
magazine binder
Mauthner's cells
microdictyon japonicum
minigastrin
minor premisses
muffin tin
net capacity
nice Nelly
Novi
one-in
Oslerian
outdoor pick-up
pcie
pedestrianised
pipelined array processor
press crown
proplaps
proscribed organization
quartz-crystal pressure recorder
quasi-preconsolidation pressure
R CrB star
Randall County
reactor-year
reenvisages
rice-farmer's dermatitis
Robert Sanderson
rule of operation
sadomaso-chistic
safety eyewear
screw coupling box
second-chance
self-feedback
Septum rectovesicale
sexual mentor
slot radiator
spongy mesophyll
sputum septicemia
steepest
surrenderor
table of random digits
tire valve
torvizcon
ultimate trip current
undecaoxides
underwater mills
Venedic
voyage repair
worse for wear
zacher
Znepole (Znepolje)
zorilles