Dwarf Stars
Links
The Discovery of Brown Dwarfs
http://www.sciam.com/article.cfm?articleID=000276D4-33FB-1C75-9B81809EC588EF21
Less massive than stars but more massive than planets, brown dwarfs were long assumed to be rare. New sky surveys, however, show that the objects may be as common as stars. Article from Scientific American
White Dwarfs Lecture
http://www-astronomy.mps.ohio-state.edu/%7Eryden/ast162_5/notes19.html
The origin and general characteristics of white dwarfs. High School level.