2. The Sun

3. What is the sun? A star A hot ball of glowing gases at the heart of our system The center of our solar system ◦ Makes up 99.8% of mass of solar system

4. Profile Age: 4.6 billion years Star Type: Yellow Dwarf Diameter: 1,392,684 km Circumference at Equator: 4,370,005.6 km Mass: 1,989,100,000,000,000,000,000 billion kg (333,060 x Earth) Surface Temperature: 5500 °C

6. Fun Facts One million Earths could fit inside the Sun an almost perfect sphere Light from the Sun takes eight minutes to reach Earth Travels at 220 kilometers per second Generates solar wind