What Creates Gravity?

Einstein said nothingness of space has a weird property it can expand but when it does it has its own energy.P.S. Everyone is talking about when space expands being the opposite of gravity. Is it not possible that space curving is just space shrinking instead of expanding due that spacetime has ability to shrink too?Einstein said when space expands nothingness has its own energy and is not diluting spacetime when space expands thus is not the reverse happening when spacetime shrinks (curves)? is nothing taking its part of spacetime energy so the present and the future space energy is not being diluted ? yet nothingness (shrinking and expanding) is this part of what is propelling the earth forward from the present as the earth is moving forward thru spacetime? Is the earth a mini time machine shrinking spacetime (yet not diluting existing space energy) to move the earth forward thru time? Is not that what Einsteing relativity is a bit about why on a spaceship the clock would turn at a different rate? Are they not talking about the rate time moves from the present forward thru spacetime? Energy is said not able to be created nor destroyed but appears nothing is taking its part of space time energy forward from the present and not diluting spacetimes energy but shrinks space because nothing just takes it out of the present. If energy can not be destroyed then is the expansion simply nothing carrying energy from the past expanding space outward from the present? Is not this why we hear terms like the fabric of spacetime, etc...P.S. If the past is shrinking and the present expanding is that a problem with the big bang theory? Edited by johnfolton, : No reason given.Edited by johnfolton, : No reason given.