A natural or artificial body that revolves around a celestial body of greater mass is called a satellite.

Here's a breakdown:

* Natural Satellite: These are celestial bodies that naturally orbit a planet, star, or other celestial body. Examples include the Moon orbiting Earth, or the moons of Jupiter.

* Artificial Satellite: These are objects launched into space by humans to orbit a celestial body. Examples include the International Space Station orbiting Earth, or communication satellites used for broadcasting.

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