The bending of light around a massive body was experimentally validated as a prediction of General Theory of Relativity. This phenomenon is also known as gravitational lensing. In 1919, during a solar eclipse, Sir Arthur Eddington led an expedition to measure the deflection of starlight around the sun. The measurements confirmed Einstein’s prediction that the sun’s gravitational field could bend the path of light, which was a major validation of his theory. Since then, many more observations of gravitational lensing have been made, providing further evidence for the theory of General Relativity.