Gravitation comes from the bending of the mass of the object to time and space, not from the mutual pull between gravity fields.

So gravity is not the kind of force we often understand, but the bending of time and space. It is mainly related to cosmic pressure, cosmic speed, spatial dimension, magnetic field strength and object structure.

Extended data:

A simple explanation of gravity:

The gravitational force between any two objects or particles related to their mass product is the most common force in nature, which is called gravity for short. It is called gravitational interaction and four basic interactions in particle physics: strong force, weak force and electromagnetic force.

Gravity is the weakest one. The gravitational force between two protons is only1/(1.235 *10 to the 36th power) of the electromagnetic force between them, and protons are only 1/(9.7668) of the electromagnetic force in the weak electric field.

Therefore, when studying the interaction between particles or the motion of particles in electron microscope and accelerator, the influence of gravity is not considered. The general gravity between objects is also very small. For example, when two iron balls with diameters of1.65,438+0/kloc-0 /×10-3 Newton are put together, the weight equivalent to a drop of water is 0.113g.

But the mass of the earth is very large, and these two iron balls are respectively subjected to the gravity of 4× 104 Newton. Therefore, when studying the motion of objects in the earth's gravitational field, the gravity of other objects around them is usually not considered.

Celestial bodies, such as the sun and the earth, have great mass and greater product. Great gravity can make behemoths revolve around the sun. Gravity has become the only force that dominates the movement of celestial bodies, but the reason for this gravity is not the pulling between celestial bodies, but the distortion of space-time around them.

The formation of stars does not disperse at high temperature, but gradually shrinks, and finally collapses into white dwarfs, neutron stars and black holes. This is because their huge mass causes space-time distortion, and then space-time compression, not from their own gravity, so gravity is also an important factor to promote the evolution of celestial bodies. The greater the mass, the greater the distortion of time and space, and the greater the gravity.

Reference: Baidu Encyclopedia-Gravity