 Newly discovered exoplanet is 'hotter thanmost stars’ 新发现的太阳系外行星比“大部分的恒星还热” The newest-discovered exoplanet doesn't actlike any planet you've ever heard of. The bizarre find is 650 light-years fromEarth, in the constellation Cygnus. 最新发现的外太空星球与你们之前听说过的任何一个都不一样。这个离奇的发现是在距地球650光年的天鹅座。 KELT-9b is a giant planet nearly twice thesize of Jupiter, with a dayside temperature hotter than that of most stars andthousands of degrees warmer than any known exoplanet, according to a studypublished Monday in the journal Nature. 据周一发刊的自然杂志上的一篇研究说，KELT-9b是木星的两倍大的一个巨大星球，白天温度较大多数星球高，比任何一个已知的外太空恒星要暖几千度。 It's so close to its host star, KELT-9,that it orbits every 1½ days, unlike the year it takes Earth to orbit our sun.This proximity isn't exactly kind to it. 它距它的主恒星那么近，KELT-9环绕一圈需一天半，不像地球围绕太阳那样旋转一年。这样的近距离不是什么好事。 The star is twice as hot and 2½ times moremassive than our sun. It's also rotating 50 times faster than our sun -- sofast that its poles have flattened and the equator bulges out. 这颗恒星是我们太阳的两倍热，2点5倍大。它也比我们的太阳旋转的速度要快50倍，太快了，以至于它的两极变平了，赤道部分鼓出来。 The temperature and size would make thestar appear light blue to our eyes. 温度和大小让这颗星球肉眼看上去呈浅蓝色。 Due to its incredibly hot, luminous andclose star, KELT-9b is being blasted by ultraviolet and high-energy radiation. 因为它难以置信的高温、度亮，及离恒星太近，KELT-9b被紫外线和高能辐射不断的冲击。 This radiation is causing the planet toevaporate at an unknown rate, creating a puffy, balloon-like cloud of chargedhydrogen and helium around it. The researchers also believe a comet-like tailtrails the planet as it orbits. 辐射导致星球以一种不可知的速度蒸发，被膨胀的、像气球似的含氢和氦的云朵环绕。研究人员认为，它在运转的时候应该会拖着一个像彗星一样的尾巴。 If you poured water on the surface, itwould immediately disassociate into oxygen and hydrogen, Gaudi said. Gaudi说，如果你往这个行星表面上浇水的话，水会立即分解成氧气和氢气。 As if this planet weren't strange enough,it also orbits perpendicular to its star, traveling around the star's polesrather than the equator. 好像这样还不能显得它很离奇似的，更有特别的是，它的轨道与它的恒星呈垂直，绕着星球的两极而不是赤道运转。 KELT-9b isn't on a kind trajectory. Itsstar, already a couple hundred million years old, will run out of the hydrogenenergy source at its core in 300 million more years. After that, it will expandto three times its size, cool and slow down. KELT-9b不是在一个良性的轨道线上。它的恒星，已经有几亿年了，再有3亿多年的时间，它就会用光内核全部的氢能量。之后，它就会扩大到现在的三个那么大，变凉，变慢。 If the planet is evaporating at a highrate, all that may be left after the star cools is a rocky core, which theresearchers believe to be at the heart of all giant planets. This is the lesslikely outcome, Gaudi said. 如果这个行星高速蒸发的话，研究者相信在全部蒸发后，剩下的就是在所有的巨型行星的中心，也就是一个岩石核心。据Gaudi说，这个可能性不是很大。 More likely is that as the star grows insize, it will swallow the planet and become enhanced by its lithium content. 更可能发生的是这颗恒星会体积增加，它会吞没这个行星并从它的锂含量得到充实。 If the planet is evaporating at a highrate, all that may be left after the star Either way, whether it evaporates or iseaten whole, it isn't a pleasant end for KELT-9b. "At no point did thisplanet have a nice life," Gaudi said. 不管是蒸发还是被吞没，对KELT-9b都不是什么好下场。Gaudi说“ 这个行星从头到尾都没过过什么好日子。”。 Because KELT-9 is so bright, Gaudi isconfident that observations from space telescopes like Hubble, Spitzer, TESSand, eventually, the James Webb Space Telescope could reveal more about thisstrange system. 因为KELT-9这么亮，Gaudi很有信心如果用太空望远镜，像Hubble， Spitzer， TESS，还有到时候的James Webb 太空望远镜， 这些太空望远镜会对这个奇怪的系统揭示更多。 exoplanet ：外星球 light year : 光年 orbit ：运行轨道 ultraviolet : 紫外光; 紫外线辐射; evaporate : 蒸发; 消失; 发散气体; space telescope : 太空望远镜 “少年，拼吧！”内容链接： 002. 人教版八年级下册-以tion或sion结尾的单词。 今天学习之后，也要复习一下前几天的单词哦： 2017/06/06 英语读头条（第57期） 全世界很多国家的啤酒销量出现下滑。 2017/06/05 英语读头条（第56期） 人类将近距离接触太阳。 2017/06/04 英语读头条（第55期） 一日三餐和少食多餐哪个更好。 2017/06/03 英语读头条（第54期） 外国人做起假来也毫不含糊。 2017/06/02 英语读头条（第53期）天下原来有免费的午餐。 2017/06/01 英语读头条（第52期）人类捕鲸，美人鱼遭殃。
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