The sound of black holes colliding proves Einstein was right

Aired: 2/11/2016 | 0:05:25 | Clip
Gravitational waves -- ripples in the fabric of spacetime -- aren’t just an Einstein theory any more. A team of international scientists announced Thursday that they confirmed the waves’ existence after recording feedback from a black hole collision a billion light-years from Earth. Hari Sreenivasan learns more from Dave Reitze of the California Institute of Technology.