Why Stars Glow and Planets Don't?

Stars glow because they are hot, and planets don’t because they’re not.

Imagine you have a big fire inside you, like when you light a match and it burns really bright. That’s what happens in stars! They have a huge, hot fire going on inside them all the time, so they shine bright in the sky like a giant lightbulb.

Stars are made of gas, mostly hydrogen, and when that hydrogen gets squeezed really tight, it starts to burn, just like how your match burns. This burning makes the star super hot, and that heat comes out as light.

Planets, on the other hand, are more like rocks or balls, they don’t have a fire inside them. They can reflect light from stars, like how a mirror reflects your face in the sunlight, but they don’t make their own light.

So, stars glow because they’re hot and burning, while planets stay quiet and dark, unless there’s a star shining on them!