The U/Th production ratio and the age of the Milky Way from meteorites and Galactic halo stars

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作者：
Nicolas Dauphas
机构：
[1] The University of Chicago,Origins Laboratory, Department of the Geophysical Sciences, Enrico Fermi Institute, and Chicago Center for Cosmochemistry
来源：
Nature | 2005年 / 435卷
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摘要：
Cosmologists, using cosmic clocks such as stellar beryllium accumulation, have determined the age of the Milky Way as around 13.6 billion years. A new calculation, based on the ratio of uranium-238 to thorium-232 in meteorites and galactic halo stars, gives an age quite close to that: 14.5 billion years. That's almost as old as the Universe itself.
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页码：1203 / 1205
页数：2
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