You're touching on a fundamental concept in physics: gravity. While it's true that all objects with mass exert a gravitational force on each other, the force is often extremely weak, especially at the scale of everyday objects. Here's why:

* Newton's Law of Universal Gravitation: This law describes the force of gravity between two objects:

* F = G * (m1 * m2) / r^2

* F: The force of gravity

* G: The gravitational constant (a very small number)

* m1 and m2: The masses of the two objects

* r: The distance between the centers of the two objects

* The Weakness of Gravity: The gravitational constant (G) is incredibly small. This means that even with large masses, the force of gravity is relatively weak unless the objects are very close to each other.

* The Square-Inverse Law: The force of gravity decreases rapidly as the distance between objects increases (due to the r^2 term). This means that even if two objects have a lot of mass, if they are far apart, the gravitational force between them will be insignificant.

Examples:

* Two apples on a table: The gravitational force between them is so tiny that it's practically undetectable.

* You and the Earth: The Earth's mass is enormous, but because you're standing on its surface, the force of gravity is strong enough to keep you grounded. However, if you were in space, far from Earth, the gravitational force would be much weaker.

Why do planets and stars attract each other?

* Massive Objects: Planets and stars have significantly more mass than everyday objects. This means the gravitational force between them is much stronger.

* Distance: While vast, the distances between planets and stars are relatively small compared to the immense distances between stars and galaxies.

In summary: While all objects with mass attract each other through gravity, the force is usually too weak to be noticeable in everyday life. It's only when objects have enormous masses or are very close together that gravity becomes a significant force.