双语阅读英语外刊精讲：太阳系迎来首个星际访客(附音频)

2019-03-04 14:31:10来源：酷学英语

　　双语阅读是英语学习爱好者的天堂，在双语阅读里，不仅可以了解英美当地文化、习俗，还可以掌握地道英语表达，提高英语综合能力。本期主题：新东方宁立波老师为大家带来《双语阅读英语外刊精讲：太阳系迎来首个星际访客(附音频)》，与大家一起分享。

　　Nov. 21, 2017

　　Solar System's First Interstellar Visitor Dazzles Scientists

　　NASA

　　Astronomers recently scrambled to observe an intriguing asteroid that zipped through the solar system on a steep trajectory from interstellar space—the first confirmed object from another star.

　　Now, new data reveal the interstellar interloper to be a rocky, cigar-shaped object with a somewhat reddish hue. The asteroid, named 'Oumuamua by its discoverers, is up to one-quarter mile (400 meters) long and highly-elongated—perhaps 10 times as long as it is wide. That aspect ratio is greater than that of any asteroid or comet observed in our solar system to date. While its elongated shape is quite surprising, and unlike asteroids seen in our solar system, it may provide new clues into how other solar systems formed.

　　The observations and analyses were funded in part by NASA and appear in the Nov. 20 issue of the journal Nature. They suggest this unusual object had been wandering through the Milky Way, unattached to any star system, for hundreds of millions of years before its chance encounter with our star system.

　　wander: 漫步

　　Milky Way: 银河

　　chance: 偶然的

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