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  • Big Bang breakthrough announced; gravitational waves detectedadd to reading list  

    Posted on March 18, 2014 at 2:29 PM

    Updated Tuesday, Mar 18 at 5:29 PM

    There's no way for us to know exactly what happened some 13.8 billion years ago, when our universe burst onto the scene. But scientists announced Monday a breakthrough in understanding how our world as we know it came to be.

    By CNN
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