Say a penny is falling to earth from a height, Gravitons shoot up from the earth’s surface grabbing the penny and pulling it down to earth. Fair enough. Now imagine that directly above that penny is another penny, also falling to earth, the gravitons pulling at this second penny must have passed through the first penny to get to it. So my question is, when gravitons have pulled something towards earth, how are they then able to pass through that object and go on to act upon other objects, in exactly the same way without losing any energy? cheers.