Question

If two asteroids moved closer together, what would be the result on the gravitational force each asteroid exerts on the other?

Answer 1

It will rise exponentially.

Explanation:

The gravitational force between two objects is inversely proportional to the distance between them squared. If you halve the distance then the force rises by four times etc.

This is true for both the force of A on B, and the force of B on A due to Newton's third law.