Here's why:

* Natural: This means it wasn't created by humans.

* Object: It's a physical thing, not a concept.

* Travels around a planet: It orbits the planet, following a path due to gravity.

Some examples of natural satellites are:

* Moons: These are the most common type of natural satellite. Our own Earth has one moon, while other planets like Jupiter have dozens.

* Asteroids: Some asteroids can get caught in a planet's gravitational pull and become a natural satellite.

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