By: Nathan Kellogg

The sun is in the center of the solar system.

The sun's temperature is  10,000 F, while the core is 27,000,000 F

The visible surface is called the photosphere  

The chromosphere surrounds the photosphere

All the stars seen without a telescope belong to the milkyway

Sirius, the dog star is the brightest star in the sky

Two stars revolving around a common center of gravity are called binary stars.

The farthest stars in the galaxy is billions of light years away

 The oldest stars may be 12 billion years old

Rigel a super giant, is 540 light years away

Variable stars are those whose brightest pulsates, or increases or decreases periodically

The closest star besides the sun is Proxima Centauri, 4.3 light years away