SAT阅读材料：600光年.

　　下面澳际小编为大家整理一篇关于600光年的SAT阅读素材文章，供大家学习，大家平时也可以多关注和积累，自己搜集整理一些比较好的SAT阅读考试素材，帮助自己更好地备考SAT阅读考试。

　　每一篇SAT阅读素材均有其主要观点或中心主题。典型的围绕文章主要观点的问题大多是：在这篇文章中作者的主要目的是什么?这篇文章主要涉及什么问题?这篇文章主要建议是什么?这篇文章总体上想要回答什么问题等。读完每一篇SAT阅读素材，我们都要针对SAT素材想想这几个问题。

　　Astronomers have confirmed the existence of an Earth-like planet in the "habitable zone" around a star not unlike our own.

　　The planet, Kepler 22-b, lies about 600 light-years away and is about 2.4 times the size of Earth, and has a temperature of about 22C.

　　It is the closest confirmed planet yet to one like ours - an "Earth 2.0".

　　However, the team does not yet know if Kepler 22-b is made mostly of rock, gas or liquid.

　　During the conference at which the result was announced, the Kepler team said that it had spotted some 1,094 new candidate planets.

　　The Kepler space telescope was designed to look at a fixed swathe of the night sky, staring intently at about 150,000 stars. The telescope is sensitive

　　enough to see when a planet passes in front of its host star, dimming the star&aposs light by a minuscule amount.

　　Kepler identifies these slight changes in starlight as candidate planets, which are then confirmed by further observations by Kepler and other telescopes in

　　orbit and on Earth.

　　Kepler 22-b was one of 54 candidates reported by the Kepler team in February, and is just the first to be formally confirmed using other telescopes.

　　More of these "Earth 2.0" candidates are likely to be confirmed in the near future, though a redinition of the habitable zone&aposs boundaries has brought that

　　number down to 48.

　　Kepler 22-b lies at a distance from its sun about 15% less than the distance from the Earth to the Sun, and its year takes about 290 days. However, its sun

　　puts out about 25% less light, keeping the planet at its balmy temperature that would support the existence of liquid water.

　　The Kepler team had to wait for three passes of the planet bore upping its status from "candidate" to "confirmed".

　　"Fortune smiled upon us with the detection of this planet," said William Borucki, Kepler principal investigator at Nasa&aposs Ames Research Center.

　　"The first transit was captured just three days after we declared the spacecraft operationally ready. We witnessed the dining third transit over the 2010

　　holiday season."

　　The results were announced at the Kepler telescope&aposs first science conference, alongside the staggering number of new candidate planets. The total number of

　　candidates spotted by the telescope is now 2,326 - of which 207 are approximately Earth-sized.

　　In total, the results suggest that planets ranging from Earth-sized to about four times Earth&aposs size - so-called "super-Earths" - may be more common than

　　previously thought.

　　SAT阅读考题重点考察考生的美国大学教材的快速阅读能力、理解能力及判断能力。以上就是澳际小编为大家整理的关于600光年的SAT阅读素材的详细内容，希望对大家有所帮助，澳际小编祝大家都能取得理想的SAT阅读考试成绩!