April 21, 2006
Inconstant Universe

New Scientist is carrying this article on the discovery that another "universal constant", well, isn't. This time it's the Mu constant, the ratio of a protonís mass to that of an electron. By examining the hydrogen spectra of extremely distant quasars, a group of scientists are claiming to have discovered evidence that this constant has changed about 0.002% in the past 12 billion years. If confirmed, it could provide a powerful boost to string theory, whose multidimensional structure predicts just this thing.

Update: Link now works.

Posted by scott at April 21, 2006 09:34 AM

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Is that the link you meant to post? I'm not sure it's working right.

Posted by: Sherri on April 21, 2006 08:16 PM
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