http://www.newscientist.com/article/...er-theory.html
"A SUBTLE anomaly in the orbit of the planets in our
solar system could prove a controversial idea that goes beyond Einstein.
The orbit of the innermost planet,
Mercury, departs from what it should be under Newton's laws. A century ago, when Einstein explained this anomaly, it
confirmed his theory of gravity - the general theory of relativity.
Now an Israeli physicist predicts that a similar but far more subtle anomaly in the orbits of the planets, if detected, might prove his own theory, known as modified Newtonian dynamics, or MOND..."