Gravity as the Second-Order Relativistic-Manifestation of Electrostatic-Force
It may be the displaying of the subject of gravity in some other expression.
Like the tale of the four blinds who touched the elephant: One said it is a high wall -- he touched the body of the elephant.
The other touched its trunk: he thought it was a thick tube.
And so on.
Therefore, you say: the 'electrostatic': you mean the +ve and -ve forces of the atom.
While Abu abd-Allah explained it as a manifestation of
heat, which is more practical and more definitive: the hot object is attractive and the cold object has no gravity and is attracted or gravitated.
The hot object is alive, attractive and active: moving around itself if it is spherical; the movement is because of its heat, the heat is because of the movement of its particles in high speed.
The cold object is dead (like the human dead body); the cold object has no gravity: it is attracted by the hot object.
Moreover, if you explain the matter in expression of 'electrostatic' ..etc; it will be complex; none may understand you or is convinced with it (although it has some part of the truth);
while to explain it in terms of heat and cold is more practical and more understandable of even the layman. And it is true. It is the heat energy which issues of the circulating particles in high speed; and not only the electrons and the nucleus, but also currents and particles.
The Universe and the Quran