Universe on a Scale

TIM FOLGER

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Universe on a Scale

机译：规模宇宙

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Physicist saul perlmutter vividly remembers whatrncosmology was like during his grad student days 25 years ago. "It was a standing joke that if you were within a factor of 10 with your measurements, you were doing well," he says. Estimates of the universe's age ranged from 7 billion to 20 billion years. It wasn't a discipline renowned for exactitude.

机译：物理学家索尔·珀尔默特（saul perlmutter）生动地回忆起25年前的研究生时代的宇宙学。他说：“一个笑话是，如果您的测量值在十分之一以内，那么您的表现就很好。”对宇宙年龄的估计范围为70亿至200亿年。这不是一门以精确着称的学科。

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《Discover》 |2010年第8期|P.36|共1页
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Universe on a Scale

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