Some nice visuals to explain the concept http://www.npr.org/sections/thetwo-way/2016/06/15/481934630/gravitational-waves-from-colliding-black-holes-shake-scien

Some nice visuals to explain the concept http://www.npr.org/sections/thetwo-way/2016/06/15/481934630/gravitational-waves-from-colliding-black-holes-shake-scientists-detectors-again http://www.npr.org/sections/thetwo-way/2016/06/15/481934630/...