The universe lines up along the 'axis of evil'. Coincidence?

 作者:蒙锨     |      日期:2019-03-15 08:15:13
ESO/B. Tafreshi (twanight.org) By Stuart Clark COSMOLOGISTS called it the axis of evil. Spotted in 2005 in the cosmic microwave background, the all-pervading afterglow of the big bang, the axis was a peculiar alignment of features where we would have expected nothing but randomness. The name was justifiably melodramatic, given that it threatened our established view of the universe. At the heart of that picture is the cosmological principle, which says that the universe appears the same on the largest scales no matter where you happen to be looking. This is what you’d expect in the aftermath of an explosion like our big bang, with all the constituents winding up mixed together in a randomised, homogeneous soup. The reality, it seemed, wasn’t like that – and despite steadily improving measurements, the axis has stubbornly refused to vanish. “This would be not just an axis of evil, but an axis of everything“ Cosmologist Jonah Miller at the University of Guelph in Ontario, Canada, is intrigued but sceptical of its significance. “Studying the axis of evil is certainly worthwhile. However, I don’t believe it represents a major gap in our understanding of early-universe cosmology.” He thinks the axis is just an example of what happens when you look at random data: familiar patterns will emerge by sheer chance, signifying nothing. But it’s not just the microwave ripples that seem odd. Wen Zhao, a physicist at the University of Science and Technology of China in Hefei,