Main sequence
<p>Dec 9, 2009 7:37 PM
 
Oh Be A Fine Girl, KIss, Me)  this is in order of <b>decreasing temperature.</b>  
 
Sun is a G-class star  (right in the middle);
luminosity =1;  color is Yellow.  
 
 
 
a relationship exists btwn a star's mass and its luminosity and radius.</p>