托福阅读背景材料：移居外星。背景知识在托福考试中发挥着重要的作用，很多考生都是通过背景知识了解托福考试的，希望小编整理的这一系列背景知识对大家能有所帮助。

　　托福阅读背景材料：移居外星

　　托福阅读材料原文及翻译：

　　其它星球可能存在着生命一直以来都是科幻电影的主题。现在，这种可能性有可能变成现实。据天文学家说，他们已经发现了一个适合人类居住的星球。这个星球围绕着临近恒星运转且距地球只有20光年。

　　The possibility of life on other planets has been a staple of science fiction for decades. Now that possibility has taken a step closer to reality as astronomers say they have found a planet orbiting a star a mere 20 light-years away that has the right conditions for life to exist.

　　Scientists are calling it the first "Goldilocks" planet, as its temperature seems to be just right to harbor life.

　　由于这个行星可能具备适合生命居住的条件，于是科学家便把这个新发现的行星叫做“Goldilocks”。

　　"The planet has to be the right distance from the star so it's not too hot and not too cold that liquid water can exist," says Paul Butler of the Carnegie Institution of Washington. "And then the planet has to have the right surface gravity."

　　来自华盛顿卡内基学院的保罗?巴特勒说：“由于这颗行星距临近恒星的距离恰好合适，所以这个星球上的温度既不太热也不太冷。这正好使液态水能很好的保存下来。如此以来，这个星球表面就有一定的重力存在。”

　　Butler spoke Wednesday afternoon at a news conference organized by the National Science Foundation, the organization that funded Butler's research. Astronomers have found hundreds of planets orbiting other stars in the past decade, but they have all been so far from their suns that any water would be solid ice or so close that liquid water would boil away....

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