1. Astronomers Margaret Turnbull and Jill Tarter of the Carnegie Institution in Washington, D.C., have compiled a list of 17,129 nearby stars most likely to have planets that could support complex life. 2. According to Turnbull, stars must be at least 3 billion years old (to allow life enough time to evolve) and have low mass and high levels of iron (metals are needed to form rocky, Earth-like planets). 3. Leading the list is Epsilon Indi A, a dim orange star just 11.8 light-years away, in our local corner of the Milky Way.
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机译:1.华盛顿特区卡内基研究所的天文学家玛格丽特·特恩布尔和吉尔·塔特编制了一份清单,列出了17129颗附近的恒星,这些恒星很可能具有可以支撑复杂生命的行星。 2.根据特恩布尔的说法,恒星必须至少有30亿年的历史(以使生命有足够的时间演化),并且质量低且铁含量高(形成岩石的类地行星需要金属)。 3.排在首位的是Epsilon Indi A,这是一颗暗橙色的恒星,距离我们14.8光年,位于我们银河系的本地角落。
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