The Secret of the Universe

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The Secret of the Universe
First edition
Author Isaac Asimov
Country United States
Language English
Series Fantasy & Science Fiction essays
Genre science essay
Publisher Doubleday
Publication date
Media type print (Hardback and Paperback)
Pages 240
ISBN 0-385-41693-8
Preceded by Out of the Everywhere

The Secret of the Universe (1991) is the twenty-second and final collection of science essays by Isaac Asimov, short works which originally appeared in The Magazine of Fantasy & Science Fiction (F&SF). Asimov died in 1992.


  • "The Cosmic Lens" (February 1989)
  • "The Secret of the Moon" (March 1989)
  • "The Moon's Twin" (April 1989)
  • "The Changing Distance" (May 1989)
  • "A Change of Air" (June 1989)
  • "The Importance of Pitch" (July 1989)
  • "Long Ago and Far Away" (August 1989)
  • "The True Rulers" (September 1989)
  • "The Nearest Star" (October 1989)
  • "Massing the Sun" (November 1989)
  • "What Are Little Stars Made Of?" (December 1989)
  • "Hot, Cold, and Con Fusion" (January 1990)
  • "Business as Usual" (February 1990)
  • "Smashing the Sky" (March 1990)
  • "Worlds in Order" (April 1990)
  • "Just Say 'yes'?" (May 1990)
  • "The Salty-Producers" (June 1990)

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