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Multiple Big Bangs The familiar story is that the universe began with the "Big Bang" and started expanding. Now two cosmologists are proposing that the universe goes through an infinite cycle of "Big Bangs," each followed by expansion and collapse. NPR's Richard Harris has the story.

All Things Considered

Multiple Big Bangs

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Multiple Big Bangs

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The familiar story is that the universe began with the "Big Bang" and started expanding. Now two cosmologists are proposing that the universe goes through an infinite cycle of "Big Bangs," each followed by expansion and collapse. NPR's Richard Harris has the story.