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? What are gravi­tons?

Pho­tons are force car­ri­ers of elec­tro­mag­netism, i.e. they trans­mit elec­tric force, and ac­cord­ing to one the­ory, grav­ity may also have a force- car­ry­ing par­ti­cle known as a gravi­ton. In other words, the par­ti­cle “car­ries” grav­ity. How­ever, the ex­is­tence of the gravi­ton has not been proved, so it is only the­o­ret­i­cal.

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