The Sun is the center of the solar system. It is a huge, bright star. It gives Earth light and heat. Without the Sun, there would be no life. Scientists say it formed 4.6 billion years ago from gas and dust.
The Sun is very big. Over one million Earths can fit inside it. Its gravity keeps planets and moons in orbit. It looks small in the sky but is larger than all the planets together.
The Sun’s surface is 5,500°C. Its core is 15 million degrees. It is made of hot gases. It makes energy by turning hydrogen into helium. The Sun gives life to Earth.