Gravitational Waves Exist: The Inside Story of How Scientists Finally Found Them - http://www.newyorker.com/tech/elements/gravitational-waves-exist-heres-how-scientists-finally-found-them …
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@hbdchick Disturbance of medium propagates in form of wave. "Spacetime" is a medium which is disturbed?Thanks. Twitter will use this to make your timeline better. UndoUndo
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