Sun
The Sun is the bright star at the center of our solar system. It gives Earth light, warmth, and helps plants grow.
A few interesting things
- Light from the Sun takes about 8 minutes to reach Earth.
- The Sun is mostly hydrogen and helium.
- About 1.3 million Earths could fit inside the Sun.
- Sunspots are cooler, darker patches on the Sun’s surface.
- The Sun sends out a steady stream of particles called the solar wind.
- In about 5 billion years the Sun will swell into a red giant.
Planets
Meet the planets that travel around the sun.
A few details
- Diameter: 1,392,700 km
- Surface temperature: 5,500 degrees C
- Type: yellow dwarf
- Age: 4.6 billion years