# Why is the acceleration of one cosmic body relative to another always greater than it would follow from the law of universal gravitation

September 21, 2020 | Education

| **Why is the acceleration of one cosmic body relative to another always greater than it would follow from the law of universal gravitation a = CM / r2, where M is the mass of the attracting body, and r is the distance between the centers of these bodies?**

We are talking about the acceleration of a space body in a non-inertial frame of reference associated with another space body. This acceleration is found by the formula a = G (M + m) / r ^ 2, where M and m are the masses of the bodies.

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