Saturn is a planet and not a star because it does not produce its own light. Here's why:

* Stars are massive and generate energy through nuclear fusion. This process releases tremendous amounts of heat and light.

* Planets are much smaller and do not undergo nuclear fusion. They reflect light from their host star, which is why we can see them.

Saturn, like other planets in our solar system, orbits around the Sun, a star. It reflects sunlight, making it appear bright in our sky.