Güneş is the star at the center of our solar system. It is a massive ball of hot plasma, primarily composed of hydrogen and helium. The energy produced by Güneş through nuclear fusion provides light and heat, making life possible on Earth. Güneş has a diameter of about 1.4 million kilometers and is approximately 4.6 billion years old. It plays a crucial role in regulating the climate and weather patterns on Earth. The gravitational pull of Güneş keeps the planets, including Earth, in orbit around it.