Michio Kaku said in ''Discover Presents Einstein,'' Spring 2009 (page 10), that: ''...if you put a bowling ball on a bedsheet and shoot a marble past it. The marble will move in a curved line. A Newtonian physicist would say that the bowling ball exerts a ''force'' that ''pulls'' on the marble, making it move in a curved line. A relativist would say that the ball curves the bedsheet and that the beedsheet ''pushes'' against the marble.'' ''Now replace the bowling ball with the sun and the marble with Earth. By analogy, gravity does not pull the Earth around the sun. Rather, the sun bends space around it, and curved space pushes Earth so that it moves around the sun.'' ''Gravity does not pull you into a chair; space pushes on you creating the feeling of weight.'' Qs: Is space pushing the Earth in a preferred direction? How does space decide in which direction a planet is going to be ''pushed.''