The writing about gravity. And curving space-time.

The curving space-time is a little bit complicated to perceive. 

The prove about Einstein's Theory of General Relativity. Mean that the curved space-time is proven at the same time. Curving space-time is one of the most interesting phenomena in the world. That thing means that the gravitation causes pits in the straight space-time continuum. We have seen demonstrations of that thing in many films that the commentator will put the balls on the rubber layer.  

That thing is made for demonstrating what means curving space-time. In that simulation or demonstration curving happens on the 2D layer. In the real universe, the mass center is curving space-time all around it. That kind of curving is hard to model.  

Black holes are not the only objects that are curving space-time. The curving of space-time happens all around the mass centers. So there is no straight universe in the real 3D space. All objects are curving space-time more or less.  Even the micro-and quantum gravity affects objects like superpositioned and entangled photons. 

The thing about massive objects like Earth is that every single atom of the entirety has its gravitation effect. And the gravitation of the entirety is making the gravitation of the Earth the same way as the more massive objects are forming entirety. But the question is, what is forming the black holes? Because the material cannot disappear, it must be somewhere in the black hole. 

When we are thinking about collimations of the black holes, we are facing an interesting thing. When the black holes are impacting the increase of the mass is extremely high. The colliding black holes are an extreme condition, not the normal conditions in the life of black holes. But those things are helping to understand gravity better. And gravitational waves are proven that the gravitation is some kind of wave movement or combination of particle- and wave movement. 

Can gravity field superposition like electromagnetic fields? 

But can the gravity field travel without a mass center? So can the space-time curve even there are no objects of the visible material in the area? The fact is gravitation can interact between the dark matter particles. And those particles can transmit the gravitation through space-time. But can gravitation exist even if there are no particles in the area? And can the gravitation field make things like superposition and entangle? 

If graviton exists there is a possibility. That those hypothetical particles can also superposition and entangled like some electrons or photons can do. But for confirming that thing at the first researchers must find graviton. And if that thing is done. There is the possibility to make sure the hypothesis that the gravity field can also superposition. Like electromagnetic fields can put to superposition. 

Because the curving happens around the object, the 3D space around the mass center is looking straight from the outside. Space-time is curving the same way all around it, and that thing makes the illusion of straight space-time but there is always a pit around the mass center. 

The difference with that thing in the real universe is that when the spacetime is curving around a real gravitational object that will curve the universe or space-time all around it. We have hard to see the curving in the space-time continuum because space is curving all around the mass center.