Gravitational waves have been found, scientists say - CNN.com edition.cnn.com/2016/02/11/us/gravitational-waves-feat/index.html?sr=twcnni021116gravitational-waves-feat0432PMVODtopLink&linkId=21187356 "We have detected gravitational waves. We did it," said David Reitze, executive director of LIGO, the Laser Interferometer Gravitational-Wave Observatory. The discovery, based on ripples in space-time detected by LIGO, supports a prediction made by Albert Einstein that's essential to his general theory of relativity.