托福听力课外资料练习：科学美国人60秒宇宙中的繁星相关内容分享

2017年07月18日17:44 来源：小站整理: 参与（0）阅读（2790）

摘要：托福听力的备考十分的重要，那么你应该如何练习呢?在备考过程中除了一些真题之外，一些常用的课外资料也是十分重要的。小编经常用到的就是科学美国人60秒，下面编在这里为为大家整理了科学美国人60秒：宇宙中的繁星相关的内容分享，希望对大家有帮助。

在托福听力考试的备考过程中，科学美国人60秒相信大家一定用得比较多，那么大家平时是如何利用这个课外资料的呢?这里小编整理了科学美国人60秒：细菌基本构成元素相关的内容分享，大家一起来学习一下吧。

科学美国人60秒听力练习：宇宙中的繁星

科学美国人60秒英文文本

The discovery that elliptical galaxies have many more red dwarf stars than the Milky Way means that the universe might have three times as many total stars as previously thought. Cynthia Graber reports

To many who stare up at the heavens, the stars may seem simply uncountable. Of course that’s not the attitude of astronomers. But they’ve made a discovery that means there are probably a lot more stars in the universe than they thought.

Red dwarfs are stars that are only 10 to 20 percent as massive as our sun. They’re so faint that astronomers weren’t able to detect them in any galaxies other than our own Milky Way, and neighboring ones.

So researchers used sensitive instruments at the Keck Observatory in Hawaii. They found faint signatures of these red dwarf stars in eight massive elliptical galaxies relatively close to us—between 50 million and 300 million light-years away. And they discovered that these galaxies were home to 20 times as many red dwarfs as there are in the Milky Way.

The finding means leads astronomers to believe that there may be three times as many stars in the universe as they’d previously theorized. The research was published in the journal Nature. [Pieter van Dokkum and Charlie Conroy, A substantial population of low-mass stars in luminous elliptical galaxies]

And a recently discovered exoplanet orbiting a red dwarf had some Earth-like qualities. Lead researcher Pieter van Dokkum says there could be trillions of Earths orbiting the ubiquitous red dwarfs.

科学美国人60秒词汇中文翻译：

研究发现，椭圆星系比银河系有更多的

1. elliptical adj. 椭圆的, 省略的, 简要的

2. Milky Way 银河, 银河系=Milky Way galaxy

3. red dwarf 红矮星

4. luminous a.发光的，发亮的，光明的

5. exoplanet n. 外部行星

6. ubiquitous a.无所不在的，普通的红矮星，这意味着宇宙中的星星比原来想象的要多三倍。

以上就是小编为大家整理的科学美国人60秒：细菌基本构成元素的文本以及翻译，大家练习的时候还可以找来音频资料一起练习，效果定会更好。最后，小编预祝大家托福考试能取得理想的成绩。

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