Here's why:

* Nuclear Fusion: Stars produce their own light through a process called nuclear fusion. In this process, hydrogen atoms fuse together to form helium, releasing enormous amounts of energy in the form of light and heat.

* Self-Luminous: Stars are not simply reflecting light from another source. They generate their own light and energy, making them self-luminous.

* Distant Light Sources: The light we see from stars travels vast distances through space before reaching us. This is because stars are incredibly far away from Earth.

While we can see the reflection of starlight off objects like planets and moons, the stars themselves are the primary sources of that light.