Rafi made a diagram to compare Newton's universal law of gravitation with Einstein's general theory of relativity. A venn diagram with 2 intersecting circles. The circle on the left is labeled Newton's ideas and the circle on the right is labeled Einstein's ideas. There is an X in the intersecting area. Which label belongs in the area marked X? Earth pulls objects toward its center. Gravity causes objects to fall to the ground. The curvature of space-time pushes objects toward the ground. Gravity is an attractive force in the universe.