The Sun
• At the center: The Sun is a yellow dwarf star that holds about 99.86% of the total mass of the entire solar system.
• Energy source: It generates light and heat through nuclear fusion, turning hydrogen into helium at its core.
• Galactic home: The Sun and its system reside in the Milky Way galaxy, orbiting the galactic center once every 230 million years. You can explore interactive models on the NASA Solar System Exploration page.Our solar system is a gravitationally bound system consisting of the Sun and all the celestial objects that orbit it, including eight planets, five officially recognized dwarf planets, hundreds of moons, and millions of asteroids and comets.
The Sun
• At the center: The Sun is a yellow dwarf star that holds about 99.86% of the total mass of the entire solar sy