You're asking about the definition of a satellite. Here's how to break it down:

* Satellite: A celestial body that orbits a larger body in space.

So, the answer is any of the objects that revolve around a larger body.

For example:

* The Moon revolves around the Earth.

* Planets revolve around stars (like our Sun).

* Artificial satellites (like the International Space Station) revolve around Earth.

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