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The most basic basic answer one could give is that gravity is caused by mass. This is essentially the answer that would have been given in Newton's era.

In 1916 Einstein published his Theory of General Relativity which quickly became (and still is) the best model for gravitation that we have. In Einstein's theory mass and energy are the same thing (consider his famous equation E = mc^2), therefore you might say that gravity is caused by energy (and all mass is energy).

Einstein's theory also offers a geometric picture of gravity; gravity consists of warps and curves in spacetime (caused by the presence of energy) which alter the paths of particles and give the 'illusion' of gravity.

The most in-depth answer currently available is that gravity is caused by the local Poincare invariance of the Laws of Nature. This basically means that you are free to use any coordinate system at any point in space and time and that the laws of nature are the same everywhere. This requirement automatically leads to Einstein's gravity. This is a result from quantum field theory. (Incidentally you can get the other forces of nature, such as the electromagnetic force from similar symmetry considerations).

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11y ago
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12y ago

i dont know where does gravity comes from please help me and give me the answer

It is due to the electrical forces of the atom that do not completely balance out as had previously been thought. Note that the force of gravity is infinitesimal as compared to that of electrical forces. Like charges repel while unlike charge attract. As detailed in my book "The Secret of Gravity" 1997, the average force of attraction between two hydrogen atoms was calculated and shown to be more than enough to account for the force of gravity. Those who have checked my calculations agree, although the exact values are difficult to determine since they have to be averaged over all possible orbits of the two atoms.

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Q: Where does gravity come from?
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