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美国科学60秒 SSS 2015-06-04

时间:2015-07-10 08:39来源:互联网 提供网友:yajing   字体: [ ]
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This is Scientific American 60 Seconds Science, I’m Billings, got a minute?

Astronomers1 have discovered the most luminous2 galaxy3 ever found, shining with the equivalence of 300 etralion suns from the far side of the visible universe. But almost all that light is been produced by the galaxies4 century super massive black hole, not by its stars. The inlining finding is in the astrophysical journal. Black holes are black because light itself cannot skip when it’s follow in. But feeding black hole is surrounded by a whirling white hot disk going to bring, material heat its million degrees as its spirons down to bleding, the black hole in this far galaxy sound feeding franse, it produces light to worm up most the galaxy’s dust which gives the whole galaxy an inferend glode that we can attack from 12 half billion light years away. Consider we are seeing this giant black hole activities from time when the universe only attempt present stage. Astronomers are puzzled about how it could grow so big and bright so fast. A young hungry black hole usually takes occasional break from feeding, its glowing can get instance put in some material further away. Think the baby mill, but this particular galaxy is black hole seems to a surcoms vantade this limitation. One theory is that must spilling vary slowly.The slower a black hole spins, the weaker its repulsive burps may be, the longer it can gorge and drop it. Study co-author says the slow spin maybe help the blackhole sustain its binge, which he calls the equivalent of " winning a hotdog eating contest lasting hundreds of millions of years." And there is any mustard with those dogs. Less assured. It's hot.


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1 astronomers 569155f16962e086bd7de77deceefcbd     
n.天文学者,天文学家( astronomer的名词复数 )
参考例句:
  • 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》
2 luminous 98ez5     
adj.发光的,发亮的;光明的;明白易懂的;有启发的
参考例句:
  • There are luminous knobs on all the doors in my house.我家所有门上都安有夜光把手。
  • Most clocks and watches in this shop are in luminous paint.这家商店出售的大多数钟表都涂了发光漆。
3 galaxy OhoxB     
n.星系;银河系;一群(杰出或著名的人物)
参考例句:
  • 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。
4 galaxies fa8833b92b82bcb88ee3b3d7644caf77     
星系( galaxy的名词复数 ); 银河系; 一群(杰出或著名的人物)
参考例句:
  • Quasars are the highly energetic cores of distant galaxies. 类星体是遥远星系的极为活跃的核心体。
  • We still don't know how many galaxies there are in the universe. 我们还不知道宇宙中有多少个星系。
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TAG标签:   美国60秒科学  SSS  英语听力
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