Why do planets appear bright in the night sky?

Answer

They reflect the light of a nearby star

Planets are not self-luminous and lack the mass to initiate fusion. They appear bright in the night sky solely because they reflect the light originating from their host star. Without the proximity of a star, planets would be dark, frozen worlds.

Why do planets appear bright in the night sky?

#Videos

Why the Sun is a Star, Not a Planet | Space Facts for Kids - YouTube

sunclassificationastronomystarplanet