* Stars produce their own light: Stars are giant balls of hot gas that undergo nuclear fusion in their cores, which releases tremendous amounts of energy in the form of light and heat.
* Planets reflect light: Planets don't generate their own light. Instead, they reflect light from the star they orbit. Think of a mirror: it reflects the light that hits it, making it appear bright. Planets are like giant mirrors reflecting the light of their sun.
That's why we see planets: We see planets because they are reflecting sunlight. The amount of light they reflect depends on several factors, including:
* Distance from the sun: Planets closer to the sun receive more sunlight and appear brighter.
* Composition: The composition of a planet's surface and atmosphere affects how much light it reflects. For example, a planet with a thick atmosphere like Venus reflects a lot of light, while a planet like Mercury with a thin atmosphere reflects very little.
* Angle of reflection: The angle at which sunlight hits a planet and reflects towards Earth determines how bright it appears.
So, while planets don't shine like stars, they still reflect enough light for us to see them!
