What causes gravity?

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Newton's law of gravitation.
"Every particle of matter in universe attracts every other particle of matter with a force..."

my question - what causes the attraction?

what is the origin of gravity?

pls help me to understand :)

Thanks in advance.
 
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sphyics said:
Newton's law of gravitation.
"Every particle of matter in universe attracts every other particle of matter with a force..."

my question - what causes the attraction?

what is the origin of gravity?

pls help me to understand :)

Thanks in advance.

It depends, in Newtonian gravitation, mass has an intrinsic property that causes it to attract any other mass with a force inversely proportional to the square of the shortest distance between them.
Strictly speaking gravity is caused by the warping of space-time by the stress-energy tensor, from general relativity.
 
mass, energy or pressure . Photons have a G field.
 
It's hard to answer.Actually physics is to solve how it could be not why it is.You can keep asking what causes something to cause gravity.so maybe you can put forward a theory to explain it by yourself.