Here's why:

* Gravitational Force Acts Over Distance: The force of gravity exists between any two objects with mass. This force acts across any distance, no matter how large or small. For example, the Earth exerts a gravitational pull on the Moon, even though they are separated by a vast distance.

* No Physical Contact Required: Unlike forces like friction or the force applied by pushing or pulling, gravitational force doesn't require direct contact between the objects. It acts at a distance through a field called the gravitational field.

Here's a simple analogy:

Imagine two magnets. Even though they are not touching, they still exert a force on each other. If you bring them closer, the force becomes stronger. Gravity works similarly, although it is much weaker than the magnetic force.

In conclusion:

Gravitation is a non-contact force because it acts between objects without them needing to be physically touching. This makes it a fundamental force of nature, playing a crucial role in the universe's structure and dynamics.