The Sun

The Sun is a massive, luminous sphere composed mainly of hot, ionized gases called plasma, primarily hydrogen and helium. It generates energy through nuclear fusion, where hydrogen nuclei combine to form helium, releasing tremendous heat and light. This energy radiates outward, providing heat and light essential for life on Earth. The Sun's gravity holds our solar system together, keeping planets, moons, and other objects in orbit. Its activity, including solar flares and sunspots, influences space weather and can impact Earth's magnetic field. Overall, the Sun is the central energy source that sustains life and drives Earth's climate and weather systems.