Someone asked me about sky

The sky is composed of several layers of gases, primarily nitrogen and oxygen, that protect the Earth from harmful solar and cosmic radiation. The gases in the sky also play a crucial role in the Earth's weather patterns, as well as in shaping the climate.

In many cultures, the sky has been the subject of mythology, religious beliefs, and scientific inquiry for thousands of years. Astronomers study the sky to understand the nature and evolution of our universe, while pilots and astronauts use the sky to navigate and explore the cosmos. To many people, the sky represents a symbol of freedom, wonder, and limitless possibility.