The rules of general relativity say that mass warps the canvas of space time. You can imagine that like a ball resting on a sheet of stretchy fabric. But general relativity likes things to be extra, so it also claims if we zoom in very closely to the fabric we would see that it isn’t smooth like woven cloth, but actually made of a bubbling foam of tiny new dimensions unfolding and folding back onto themselves, appearing and disappearing with incomprehensible rapidity. As usual, the quantum realm refuses to just be normal and intuitive.
Keishinrei 