Newton's Law of Universal Gravitation states that every object in the universe attracts every other object with a force that is:

* Proportional to the product of their masses: The more massive the objects, the stronger the attraction.

* Inversely proportional to the square of the distance between their centers: The farther apart the objects, the weaker the attraction.

So, even seemingly tiny objects exert gravitational force on each other. The force is just extremely weak unless the objects are incredibly massive or very close together.

Here are some examples:

* You and the Earth: You are attracted to the Earth by gravity, and this is what keeps you on the ground.

* The Earth and the Moon: The Earth's gravity keeps the Moon in orbit.

* Two apples: They do exert a gravitational force on each other, but it's so small you wouldn't notice it.

* Two galaxies: Their enormous masses create a powerful gravitational attraction between them.

Let me know if you'd like to know more about gravitational force!