The proof of the vector nature of the gravitational potential is given, according to which the gravitational potential at any point in the infinite Universe is equal to zero. On the contrary, according to scalar concepts of gravitational potential, in a stationary Universe the gravitational potential is equal to infinity, and at any point in space. However, this potential is included in the equation of universal gravitation, which is clearly vector in nature. The law implicitly contains not only the acceleration of gravity, a vector quantity, but also the gravitational potential that forms it, which automatically receives the status of a vector.