Many thousands of visible stellar objects have been discovered to also be strong emitters of radio frequency radiation. All such stars may be called radio stars.
It is helpful in discussing star types and activities to review stellar evolution. For a discussion of star birth, maturation, old age, and death, please read Chapters 20-22 in Universe, by William J. Kaufmann III, or Chapters 28-30 in Abell’s Exploration of the Universe, by David Morrison, Sidney Wolff, and Andrew Fraknoi.
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