General Theory Prediction
The General Theory of Relativity predicts that light coming from a strong gravitational force have its wavelength shifted.
Gravity is warped or curved by matter and energy in it.
First of, General Relativity predicts that the wavelength will be shifted to larger values from light coming from a strong gravitational force. This once again is contrary to Newton's prediction and with detailed observations it indicates that its magnitude is correctly given by Einstein's theory. When they did an experiment, they found that the light bends in gravitational fields in line with the predictions of general relativity that was done in 1919.
The Prediction of His Theory