Thanks Smith, I can accept that. Now I am waiting to learn how the absorption process works.

haha i think you misunderstood what I said.
what you showed is an explanation on the mechanics of gravitation, but not explanation of why it exist.
of course that's a very nice and popular explanation by einstein in his General Relativity.

to show it clearly,
there's 4 fundamental forces in today's universe: Gravitational, electromagnetic, strong nuclear, weak nuclear forces.
the mechanics of all 4 forces are almost the same,
the only difference is in their strength, and thus the range.
yes we can explain the mechanics of the forces with mathematical model (in fact every picture/explanation is what we derived from math, including your classical example of gravity's mechanics)
but why do they exist?
no explanation, at least so far.

let's look at electromagnetic force.
charged object possess this force,
the same signs repel and the opposite signs attracts.
but why is this so?
and why is there electrical field in around charged objects?
so far we can only say it's there because it's there,
this is the way it is, what we observed.

Math is a fail .. dont use it. Think Logic. Think outside the box. Think Nature law. Nature will show us the right way.
Gravity has its highest and lowest point. Like you see earth have Ozone layer. Certian gravity pull ozone together and certian gravity pull dirt and people to the ground. The core.. its there the center of no gravity.

Eg. Nucleus cell. Proton & electron. Sun and planets. 

They all follow different gravity to maintain their position. If gravity is but one. We would have all the planets flying side by side with earth.
Same as ozone layer would be at our heads or feet.
Law of gravity has many pulls and push but never as one.

scientific theory are not just speculation, please read up on what a scientific theory actually is

Math is a fail .. dont use it. Think Logic. Think outside the box. Think Nature law. Nature will show us the right way.