How the Sun Works

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The Ultimate Astronomy Quiz

The Ultimate Astronomy Quiz

Man has always been fascinated by the world beyond our own, making astronomy one of the oldest sciences. Test your astro knowledge with our quiz.

Related HowStuffWorks Articles

More Great Links


  • Remote Sensing Tutorial: Cosmology. NASA.
  • How much energy does the sun produce? Boston Globe. Sept. 5, 2005.
  • How old is the Sun?
  • The Sun's Energy Source.