While the faster-than-light neutrinos are grabbing all the physics-shattering attention, there's another strange, unexplained anomaly that might be about to rewrite our understanding of the cosmos. It's all because the universe isn't as monotonous as it should be.
The cosmic microwave background, which is the radiation left over from the Big Bang, is not exactly evenly distributed, with certain parts of the sky featuring higher concentrations of radiation than others. That, in itself, doesn't go against the cosmological principle, which states that at large scales the universe looks the same all over.
What does appear to contradict this long-held principle is that the CMB distribution doesn't appear totally random - instead, it appears aligned in a pattern that points in one particular direction. The line marked out by this distribution has been rather dramatically nicknamed the "axis of evil" by cosmologists.
We talked about this a few months ago, and since then the evidence has only grown more compelling that this is a real phenomenon and not just a fluke - though it's still well short of being considered a bona fide discovery. So what's going on? Writing in Scientific American, Michael Moyer lays out some of the more amazing explanations: