Einstein made this idea that objects distort space. The bigger the opject the bigger the distortion. If an object came along it would bend space like a marble on a blanket. And other near abject would fall intot he curvature and this was gravity. Although I revere EInstein I think this is absurd. If objects curve space what making them fall in? There has to be a force pulling them down into the depression. That and space is 3 dimensional. Blankets and any other objects with curves,canyons, or depressions in the are 2 dimensional.