White dwarf star throws light on possible variability of a constant of Nature

[unable to retrieve full-text content]Astronomers have studied a distant star where gravity is more than 30,000 times greater than on Earth to test the controversial theory that one of the constants of Nature is not a constant. The researchers used the Hubble Space Telescope to measure the strength of the electromagnetic force -- known as alpha -- on a white dwarf star. The results do not contradict the variable-constant theory.

Source: http://feeds.sciencedaily.com/~r/sciencedaily/top_news/top_science/~3/gJuZ_5ADvZU/130704095042.htm

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