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."

Comments

Collision?

[pushing-robot]

If universes can physically interact with each other, can each really be called a "Universe"?

Re:Collision?

[pclminion]

If universes can physically interact with each other, can each really be called a "Universe"?

If they could not physically interact, what would be the point? If something can't be seen, measured, felt, etc then how can it even be said to exist?

Re:BS

[MightyMartian]

Or maybe you just don't what what you're talking about, and think that playing a public game of semantics is a suitable replacement for knowledge.