'Multiverse' theory suggested by microwave background

Archean

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The idea that other universes - as well as our own - lie within "bubbles" of space and time has received a boost. Studies of the low-temperature glow left from the Big Bang suggest that several of these "bubble universes" may have left marks on our own. This "multiverse" idea is popular in modern physics, but experimental tests have been hard to come by.
 
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