Question:

Both Henry Cavendish and Johann von Soldner theorized that Newtonian physics predicts that light will bend when passing near a massive object. Two centuries later, Einstein noted that his theory of general relativity predicted that the deflection of light should be approximately double that predicted by Cavendish and von Soldner. Einstein's bold prediction was put to the test in 1919 when observations of the apparent positions of certain stars were made in four cities in South America and Africa during a total solar eclipse. The resulting data were consistent with Einstein's prediction. Subsequent observations made by the Lick Observatory in 1922, the Yerkes Observatory in 1953, and the University of Texas in 1973 were consistent with those made in 1919. What conclusion can be drawn based upon the observations described above?