As always I come to this message board with a stupid question in hopes of being educated. Someone brought this up and I had no answer. Gravity is an effect of warped space, is it not? The more massive an object, the more warped the space is around it. Less massive objects travelling near a more massive object will attempt to move in a straight line, but since space is warped, the trajectory will curve. But why will otherwise motionless objects (motionless wrt each other) gravitate toward one another?