Star at the center of the Solar System
The Sun is the star at the center of the Solar System. It gives Earth light and heat, and its gravity keeps the planets moving around it.
The Sun is the star that lights and warms the Solar System.
A bright yellow Sun glowing in dark space.
The Sun is the star that lights and warms the Solar System.
The Sun is a huge ball of hot gas. Deep inside, nuclear fusion releases energy. That energy travels outward as light and heat, making life on Earth possible.
Without the Sun, Earth would be dark and frozen. Plants use sunlight, weather depends on solar energy, and every planet follows a path shaped by the Sun’s gravity.
Picture a giant glowing sphere far larger than Earth. It looks calm from far away, but its surface and outer layers are full of movement and heat.
The Sun is the central star of our planetary system. When you learn the Solar System, the Sun is always the place to start.
The site is built for readers who want calm explanations first. Each page starts with the basics and then adds more detail in short blocks.
The blocks let the reader take the page in small steps. You can read one idea at a time and still keep the next button in view.