.

Saturday, April 9, 2011

Science:  Laws of Physics May Change Across the Universe

New evidence supports the idea that we live in an area of the universe that is "just right" for our existence. The controversial finding comes from an observation that one of the constants of nature appears to be different in different parts of the cosmos.
Even more surprising is the fact that the change in the constant appears to have an orientation, creating a "preferred direction", or axis, across the cosmos. That idea was dismissed more than 100 years ago with the creation of Einstein's special theory of relativity.
... the team's analysis of around 300 measurements of alpha in light coming from various points in the sky suggests the variation is not random but structured, like a bar magnet. The universe seems to have a large alpha on one side and a smaller alpha on the other.

This "dipole" alignment nearly matches that of a stream of galaxies mysteriously moving towards the edge of the universe. It does not, however, line up with another unexplained dipole, dubbed the axis of evil, in the afterglow of the big bang.

Even if the result is accepted for publication, it is going to be hard to convince other scientists that the laws of physics might need a rewrite. A spatial variation in the fine-structure constant would be "truly transformative", according to Lennox Cowie, who works at the Institute for Astronomy in Hawaii. But, he adds, extraordinary claims require extraordinary evidence: "That's way beyond what we have here." He says the statistical significance of the new observations is too small to prove that alpha is changing.

For more, see Laws of Physics May Change Across the Universe by Michael Brooks, September 8, 2010 at New Scientist.

No comments: