The sun is a yellow dwarf star at the heart of our solar system. Though the sun is special to us there are billions of stars like our sun scattered across the Milky Way galaxy.
Average diameter: 864,000 miles
The Sun is 109 times the size of the earth
Rotation period at equator: About 27 days
Rotation period at poles: About 36 days
Surface temperature: 10,000 degrees Fahrenheit
Composition: Hydrogen, Helium