In general relativity, gravitational waves cannot travel faster than the speed of light. They do not exist in the Newtonian theory of gravitation, in which physical interactions propagate at infinite speed. However, the detection of gravitational waves proves the last prediction of Einstein’s general theory of relativity.
The project is run by the LIGO Laboratory at Caltech. The detector is in the huge Livingston woodland in Louisiana. The detector is two two and a half mile (~4 km) long completely straight pipelines at right angles. Inside each pipe is a laser which measures any change in length. Once the gravity wave event was detected, telescopes searched for visual images of the cause. The VISTA telescope in Chile got the image.