The sun shines on the earth every day.
In a word, the sun can be called a fixed star in the galactic system.
The sun is a center of the solar system,
and the earth does the surroundings once spending one year.
The distances of the sun and the Milky Way are about 28,000 light-years.
The distance of the sun and the earth is assumed to be about 150 million km.

Mean diameter : 1.392×10^9 m / 1,392,000km
Rotating period : 27days6h36min
temperature of surface : 5,778 K

Hydrogen: 73.46%
Helium: 24.85%
Oxygen: 0.77%
Carbon: 0.29
Iron: 0.16%
Neon: 0.12%
Nitrogen: 0.09%
Silicon: 0.07%
Magnesium: 0.05%