* Increase the mass of either object: The more massive the objects, the stronger the gravitational attraction between them. This is directly proportional, meaning if you double the mass of one object, you double the gravitational force.
* Decrease the distance between the objects: The closer the objects are to each other, the stronger the gravitational force. This relationship is inversely proportional, meaning if you halve the distance between the objects, you quadruple the gravitational force.
It's important to note that:
* Gravitational force is always attractive. It always pulls objects together, never pushes them apart.
* The strength of the gravitational force is relatively weak compared to other forces like electromagnetic forces. However, it acts over extremely long distances and is the dominant force in the universe on a large scale.
Let me know if you'd like to explore any of these concepts further!