The Secret of the Universe
Collection of seventeen scientific essays: "The Cosmic Lens" (February 1989) "The Secret of the Universe" (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) …
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