Earth seen in a new light

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Earth seen in a new light

机译：地球从新的角度看

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Part of the little we know about the atmospheres of extrasolar planets is gleaned from spectra obtained from starlight that has passed through the planetary atmosphere as it transits the stellar disk. As planet-finding techniques improve, the point where analogues of Earth are likely to be found is approaching. So what are we looking for? A good starting point for comparisons would be a transmission spectrum of our own planet. Now we have one, based on the characterization of sunlight reflected by the Moon during a lunar eclipse, a scenario that resembles the observing geometry of a planetary transit.

机译：我们对太阳系外行星大气了解的部分知识是从星光获得的光谱中收集的，星光在穿过恒星盘时已经穿过了行星大气。随着寻找行星技术的发展，可能会发现地球类似物的点越来越近。那我们在找什么呢？比较的一个很好的起点是我们自己星球的传输光谱。现在，根据月食期间月球反射的太阳光的特征，我们得到了一种类似于行星过境的观测几何形状的场景。

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《Nature》 |2009年第7248期|748-749|共2页
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收录信息美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);美国《化学文摘》(CA);
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Earth seen in a new light

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