First Observational Test of the "Multiverse"

An anonymous reader writes "The theory that our universe is contained inside a bubble, and that multiple alternative universes exist inside their own bubbles – making up the 'multiverse' – is being tested observationally by UK physicists, who are searching for disk-like collision patterns in the cosmic microwave background (CMB) radiation. Though CMB is generally thought of as a uniform schmear of radiation extending in all directions in our universe, in fact, they say if a multiverse exists, there ought to be imprints trapped in the muck like footprints of where our universe banged into others."