Universe in Flux: Constant of nature might have changed

10:16am, April 26, 2006

Scientists have long assumed that a few characteristics of the cosmos are as unvarying as the laws of physics themselves. These so-called constants of nature include the speed of light in a vacuum and the masses of some elementary particles.

Now, a team of physicists and astronomers in the Netherlands, Russia, and France has found signs that one of the constants has undergone a subtle shift since the infancy of the universe.

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