Gamma Ray Delay May Be Sign Of 'New Physics'
http://www.yubanet.com/artman/publish/article_6658...
Delayed gamma rays from deep space may provide the first evidence for physics beyond current theories.
The MAGIC (Major Atmospheric Gamma-ray Imaging Cherenkov) telescope found that high-energy photons of gamma radiation from a distant galaxy arrived at Earth four minutes after lower-energy photons, although they were apparently emitted at the same time. If correct, that would contradict Einstein's theory of relativity, which says that all photons (particles of light) must move at the speed of light.