Australian scientists have proposed that the speed of light may not be a constant, a revolutionary idea that could unseat one of the most cherished laws of modern physics — Einstein’s theory of relativity.

The team, led by theoretical physicist Paul Davies of Sydney’s Macquarie University, says it is possible that the speed of light has slowed over billions of years. If so, physicists will have to rethink many of their basic ideas about the laws of the universe.



“That means giving up the theory of relativity and E=mc2 and all that sort of stuff,” Davies told Reuters.



“But of course it doesn’t mean we just throw the books in the bin, because it’s in the nature of scientific revolution that the old theories become incorporated in the new ones.”



Davies and astrophysicists Tamara Davis and Charles Lineweaver from the University of New South Wales published the proposal in Thursday’s edition of scientific journal Nature.



More here.

0