* Sun: The Sun is a star, a giant ball of hot gas that produces its own light and heat through nuclear fusion.

* Earth: Earth reflects sunlight, but it doesn't produce its own light.

* Moon: The Moon also reflects sunlight, it doesn't produce its own light.

* Satellite: Satellites are man-made objects that orbit the Earth. They can have lights on them, but they don't produce light on their own.

Let me know if you have any other questions!