An attractive force that acts between all objects without contact
Step-by-step explanation:
The force of gravity, first discovered by Isaac Newton, is one of the four fundamental forces. It is a force that is always attractive, and it is exerted between all objects that have mass. Also, the force is exerted even when the two objects are not in contact.
The magnitude of the force of gravity between two objects is given by

where
G is the gravitational constant
m1 and m2 are the masses of the two objects
r is the distance between the two objects