Once upon a time, there was a little girl named Lily who loved looking at the stars at night.

Lily wondered why the stars twinkled and glowed so brightly. She asked her dad for an answer.

Dad explained that all stars are actually suns, just like the Sun we see during the day.

Lily was amazed! She didn't know the stars were like the Sun. She imagined them with flames.

But Dad told Lily that a Sun is not burning with flames. It undergoes some other reactions.

It's different from burning paper or wood, which needs oxygen to keep burning.

Stars shine because of a process called nuclear fusion that happens deep inside them.

This creates a lot of energy and light that reaches us all the way on Earth.

Lily learned that stars are not on fire, but they are just very bright because of the reactions inside them.

From that day on, Lily looked at the stars with a new sense of wonder and excitement.