The Hitch Hiker's Guide to the Galaxy by Douglas Adams
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Foundation by Isaac Asimov
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The War of the Worlds by H. G. Wells
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Contact by Carl Sagan
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Hyperion by Dan Simmons
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The Left Hand of Darkness by Ursula K. Le Guin
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Dragonflight by Anne McCaffrey
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Foundation and Empire by Isaac Asimov
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Second Foundation by Isaac Asimov
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Children of Time by Adrian Tchaikovsky
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Ringworld by Larry Niven
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The Foundation Trilogy by Isaac Asimov
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Publishing History

This is a chart to show the publishing history of editions of works about this subject. Along the X axis is time, and on the y axis is the count of editions published. Click here to skip the chart.  This graph charts editions published on this subject.
Editions Published
Year of Publication

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Subjects

Fiction, Fiction, science fiction, general, Science fiction, Juvenile fiction, Space warfare, Human-alien encounters, Extraterrestrial beings, Children's fiction, Fiction, science fiction, space opera, Comic books, strips, Unidentified flying objects, Interplanetary voyages, Science Fiction, Space colonies, American Science fiction, Juvenile literature, Fiction, science fiction, action & adventure, Exobiology, Vie extraterrestre, Imaginary wars and battles

Places

Mars (Planet), Outer space, United States, Earth, Solar system, Moon, Japan, Egypt, Venus (Planet), England, France, Pern, Earth (Planet), London, Mars, Skolian Empire (Imaginary place), Galaxy, Great Britain, Heart of Gold, Magrathea

People

Darth Vader (Fictitious character), Luke Skywalker (Fictitious character), Han Solo (Fictitious character), Leia Organa (Fictitious character), Hari Seldon (Fictitious character), Erich von Däniken (1935-), Arthur Dent, Ford Prefect, Zaphod Beeblebrox, Carl Sagan (1934-1996)

Times

The Far Future, 20th century, Future, Far future, after mankind and attained interstellar FTL travel., 21st century, The far distant future, To 332 B.C., 19th century, Far Future

Prolific Authors

who have written the most books on this subject
Anne McCaffrey, 41 books
Andre Norton, 38 books
Erich von Däniken, 30 books
David Weber, 27 books
Sharon Lee, 23 books
Kevin J. Anderson, 22 books
Maximillien De Lafayette, 22 books
C. J. Cherryh, 21 books
Brian Herbert, 19 books
John Ringo, 19 books
Poul Anderson, 19 books
Alan Dean Foster, 19 books
Isaac Asimov, 17 books
Ben Bova, 16 books
Bruce Coville, 16 books
David Sherman, 16 books
Eric Flint, 15 books
Elizabeth Moon, 15 books
Marion Zimmer Bradley, 15 books
Larry Niven, 15 books
Timothy Zahn, 14 books
Robin D. Owens, 13 books
John Scalzi, 13 books
Nancy Kress, 13 books
Whitley Strieber, 13 books