Here's why:

* Newton's Law of Universal Gravitation: This fundamental law states that every particle in the universe attracts every other particle with a force that is:

* Proportional to the product of their masses. The more massive the objects, the stronger the gravitational pull.

* Inversely proportional to the square of the distance between them. The farther apart objects are, the weaker the gravitational force.

* Even small objects have gravity: While the gravitational force of everyday objects is very weak, it is still present. For example, you exert a gravitational force on the chair you're sitting on, and the chair exerts a gravitational force on you.

* Gravity is a fundamental force: Gravity is one of the four fundamental forces of nature, alongside the strong nuclear force, the weak nuclear force, and the electromagnetic force.

It's important to remember:

* The force of gravity is proportional to mass. Large objects like planets and stars have much stronger gravitational forces than small objects.

* Gravity can be measured, even for small objects. Scientists use sensitive instruments to measure the gravitational force between objects.

So, while we often think of gravity as being associated with large celestial bodies, every single thing around you, no matter how small, has a gravitational pull, even your phone!