What did Dr. Einstein predicts about the Planet Mercury

At first glance, Mercury's orbital motion seems to contradict the laws of Kepler and newton : The perihelion- the points nearest to the sun - shifts in position slowly around the Sun from year to year. This movement is called orbital precession. Some prediction had been predicted from Newton laws, but observers found an excess shift of 43 seconds of arc each century- a tiny amount ,but enough to consternate orbital theorists!

The French astronomer U.J. Leverrier, around 1860, thought that the excess shift might be caused by gravity of a small ,undiscovered planet inside Mercury orbit. He gave the planet name mercury - Vulcan. Leverrier's had already successfully predicted Neptune's existence from similar gravitational disturbances in the motion of Uranus,but he was wrong in case of Mercury.   Twentieth - century observations reveal no planet inside Mercury's orbit. But how can Mercury's orbital precession be explained? The solution came in 1915, when Albert Einstein showed that the great mass of the Sun disturbs the orbits of nearby planets in a way unpredicted by Newtons laws. Einstein's theory of relativity predicted almost exactly the excess precession observed- 43.03 seconds of arc per century. Einstein predicted smaller excesses for Venus and Earth, and these too were confirmed by observation. Thus Einstein's contribution to solving the puzzle of Mercury's precession played a major role in the acceptance of his theory of relativity.