* Mass of the objects: The more massive the objects, the stronger the gravitational force between them.

* Distance between the objects: The closer the objects are, the stronger the gravitational force between them. This force decreases rapidly as the distance increases.

This relationship is described by Newton's Law of Universal Gravitation:

F = G * (m1 * m2) / r²

Where:

* F is the force of gravity

* G is the gravitational constant (approximately 6.674 × 10⁻¹¹ N⋅m²/kg²)

* m1 and m2 are the masses of the two objects

* r is the distance between the centers of the two objects

In simpler terms:

* Heavier objects pull on each other more strongly.

* Objects that are closer together pull on each other more strongly.