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【我翻第1期】Look for Living Planets Near Dying Stars

2011/4/29镜像同步12 回复

同学们~大家好~“我翻”小活动试运行啦~~走过路过不要错过啊~~ “我翻”是这样玩儿的：翻译下面的小文，发送到邮箱13919667707@139.com 邮件题目格式：【我翻第1期】id：selffractal 发送完毕之后，在主题帖中吱一声~不要把翻译的内容贴到这里来哦~~ 每期设定收文截止日期，本期的截止日期为5月9日，即下下周周一。届时我会将收到的译文整理并公布，大家来做一评选。正文来咯~~~ Look for Living Planets Near Dying Stars It’s been nearly 20 years since astronomers first identified a planet outside our solar system. More than 500 exoplanets have been discovered since then, yet it’s not clear if even one of them might be habitable. Now, astronomer Eric Agol at the University of Washington says we’ve been looking in the wrong places. If we want to find planets that could support life, he says we should look at stars that are dying. He floats that suggestion in the Astrophysical Journal Letters. White dwarves are the remnants of stars like our sun that start to cool. But they’re still warm enough to keep a planet at a nice cozy temperature…if that planet is close enough. Say, 10 to 100 times closer than Mercury gets to the sun. And that distance is what makes white dwarves so attractive. To astronomers, anyhow. Because a planet that close to its star would dim the dwarf’s light as it passes. The dimming could be detected by even a puny one-meter telescope. Agol suggests we survey the 20,000 white dwarves closest to Earth. Finding a planet would give us a good place to look for life. Or maybe someday live.

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