托福听力课外资料练习：科学美国人60秒冥王星新卫星相关内容分享

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秒冥王星新卫星的内容分享，大家一起来学习一下吧。

科学美国人60秒听力练习：冥王星新卫星

科学美国人60秒英文文本

Imagine a pinball machine on multi-ball mode—only the balls are the size of planets. The early solar system was such a rough-and-tumble place.

That chaotic environment produced the occasional literally Earth-shattering collision. The moon, for instance, is believed to have formed from debris stirred up by a Mars-size object careening into our young planet.

Now, new research indicates that Pluto may have suffered a similar fate. According to planetary scientist Robin Canup, all three of Pluto’s satellites could trace back to a single impact.

An impact has long been suspected for the birth of Charon, the largest Plutonian moon, but Canup ran impact simulations to show that Nix and Hydra, two much smaller satellites discovered in 2005, may be debris from the same collision. Her study appears in The Astronomical Journal. ["On a Giant Impact Origin of Charon, Nix and Hydra"]

A simulated low-speed crash between comparably sized planetoids yields a Pluto and a Charon, plus an icy debris disk that could coalesce into a Nix and a Hydra. That means that the small satellites should still be pretty icy—a prediction that may be tested as soon as 2015, when NASA’s New Horizons probe reaches the area. If the probe finds that Nix and Hydra are mostly ice, it'll show Canup’s simulation to be a smashing success.

—John Matson

科学美国人60秒词汇翻译：

1. pinball n. 弹球戏

2. rough-and-tumble adj. 杂乱无章的, 混乱的

3. debris n.瓦砾堆

4. careen v.(船)倾斜，使倾斜

5. planetary adj. 行星的, 有轨道的

6. planetoid n. 小行星

7. coalesce v.联合，合并，结合

以上就是小编为大家整理的科学美国人60秒：冥王星新卫星的文本以及翻译，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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