Here's why:

* Satellite: This is the most general term. A satellite is any object that orbits another, larger object in space.

* Natural Satellite: This refers to objects that naturally orbit a planet, like our Moon orbiting Earth.

* Artificial Satellite: This refers to objects launched by humans into orbit around a celestial body, like the International Space Station orbiting Earth.

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