The airplane in the sky

Kirsten is playing in the backyard that evening. He was playing football alone. He was six years old. Suddenly he heard some sound. He looked around. The sound was coming from the sky. He looked up into the sky. He saw an airplane. It was big. It was traveling in the sky. He was so excited. He started clapping hands. He called his mom to show the airplane. His mom joined him. When the airplane went far away, Kirsten had a doubt. He asked how it is possible that the airplane is not falling down from the sky. Mom explained how it is possible. She said they would go to their granny’s place in few days, traveling in an airplane. Kirsten was more than happy.