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标题: [探索发现] 2015-04-10 BBC:星光七纪元-24 [打印本页]

作者: qingchengshan    时间: 2015-4-10 07:44     标题: 2015-04-10 BBC:星光七纪元-24

 

 

 BBC: Seven Ages of Starlight |  英国广播公司星光七纪元

 

 BBC: 恒星七纪

 

这是一个关于恒星的史诗般的故事,以及发现它们的故事是如何转变了我们对于宇宙的理解。曾几何时我们认为太阳和恒星是众神和巨人。现在我们知道,在某种意义上,我们是对的。恒星都有它们独特的特点,历史和在宇宙中的角色。最起码,它们在创造我们的过程中扮演了极其重要的角色。

This is the epic story of the stars, and how discovering their tale has transformed our own understanding of the universe.

Once we thought the sun and stars were gods and giants. Now we know, in a way, our instincts were right. The stars do all have their own characters, histories and role in the cosmos. Not least, they played a vital part in creating us.

 

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作者: 深白的蓝    时间: 2015-4-10 23:53     标题: [Homework]2015-04-10 BBC:星光七纪元-24

This tiny companion to the bright dog star was dubbed the pup, and by 1922 this new type of star had an official classification, it was called a white dwarf, but naming it was the least of scientists' problems, when they compare its size to its mass, something extraordinary emerged, it was denser than anything on Earth, denser than anything previously imagined, they were a type of star that shouldn't exist, the burnt out remains of one whose fusion has stopped, their fuel is exhausted, so how can they still shine? mysteries that had long intrigued John E.
Throughout their lives stars make their energy by fusing together light and nuclei to make heavier ones, they start off with hydrogen, and they make helium, then they go on to fuse together helium to make carbon and oxygen, and as time goes on they burnt out more and more of this fuel until eventually it's like a car you run out of gas.
With its helium burning days at the end, the white dwarf's active life is over, all it's left with is a dead core of carbon and oxygen, it's not really a star at all, but a cinder, and the internal battle raging in the heart of the star between gravity and fusion now has a clear victor.

This post was generated by put listening repetition system,  Check the original dictation thread!
作者: yong999988    时间: 2015-4-11 13:09

This tiny companion to the bright Dog Star, was dubbed the pup. And by 1922, this new type of the star had an official classification. It was called a white dwarf. But naming it was the least of scientists’ problems. When they compared its size to its mass, something extraordinary emerged. It was denser than anything on earth, denser than anything previously imagined. They were a type of star that shouldn’t exist. The burnt down remains if one of fusion has stopped. The fuel exhausted, so how can they still shine? Mysteries, that have long intrigued professor John Aleis. Throughout their lives, stars make their energy by fusing together lighter nuclei to make heavier ones. They start off with hydrogen, then the helium, then they go on to fuse together helium to make carbon and oxygen. And as the time goes on they burn out more and more this fuel, until eventually, it’s like a car, even run out the gas. With its helium burning days at the end, the white dwarf active life is over. All it’s left with is a dead core of carbon and oxygen. It’s not really a star at all, but a cinder and an internal battle raging in the heart of the star, between gravity and fusion, now has a clear victor.
作者: 金良_1742792    时间: 2017-5-16 00:57

HM
This tiny companion to the bright dog-star was dubbed the pup. And by the 1926, this new type of the star had an official classification, it was called a white dwarf, but named it with the list of the scientists’ problems, when they compare its size to is mass, something extraordinary emerged, it was denser than anything on earth, denser than anything previously emerged, they were type of star they shouldn’t exist, the burn out remnant is one of his fusion has stopped, their fuel is exhorted, so how can they still shin? Mystery that have been long intrigued professor John Alice.
Throughout their lives, stars make their energy by fusing together, light nuclei to make heavier ones, they start off with hydrogen, and the helium, then they go on to fuse together, helium to make carbon and oxygen, and as time goes on they burn up more, more the fuel and until eventually it’s like a car you run out of the gas.
With its helium burning days is to end, the white dwarf active live is over, all is left with is dead core of carbon and oxygen. It’s not really a star at all, but a cinder, and internal battle raging in the heart of the star between gravity and fusion, now has a clear victor.




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