This survey reviews the experimental work on gravitational radiation from its prediction by Einstein as a part of his General Theory of Relativity. After a long programme of development of detectors, J. Weber claimed, some three years ago, to have detected intense bursts of gravitational radiation emanating from unknown sources beyond the solar system. At present there is no evidence from independent sources to confirm Weber's results, but his work has stimulated widespread activity among experimental and theoretical workers. Should Weber's results be confirmed, we have before us the prospect of a new form of astronomy.