The force of gravity between two objects:. Physics & Astronomy

increases with the masses of the bodies, but decreases with their separations
depends on the density, not the mass of the bodies
increases with the square of their masses, but decreases with the cube of their periods of orbit about the Sun
increases with the masses of the bodies, but decreases with the square of the distances between them
depends on the temperature, density, and size of the bodies

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The Patristic Period Lections