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Big Bang Theory Scrutinized

The universe expanded so fast in its first moments of existence that it left ripples in the fabric of space-time. Or maybe it didn’t. In a study that could explain what put the “bang” in the Big Bang, researchers say they have detected the remnants of gravitational waves that fluttered through the universe in an infinitesimally brief period after the Big Bang. Albert Einstein predicted the existence of those waves in his theory of general relativity. If they exist, they would move...

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