series5 books1970
part of Known Space
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The Ringworld series is a series of science fiction novels written by American author Larry Niven. It is part of his Known Space series of stories. Its backdrop is the Ringworld, a giant artifact 3 million times the surface area of Earth circling a star. The series is composed of four standalone science fiction novels, the original award-winning book and its three sequels:1970: Ringworld 1979: The Ringworld Engineers 1996: The Ringworld Throne 2004: Ringworld's Children
Robert A. Heinleinstandalone novel1959
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Starship Troopers is a military science fiction novel by American writer Robert A. Heinlein. Written in a few weeks in reaction to the US suspending nuclear tests, the story was first published as a two-part serial in The Magazine of Fantasy & Science Fiction as Starship Soldier, and published as a book by G. P. Putnam's Sons on November 5, 1959.
series4 books1974
part of CoDominium
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Larry Niven and Jerry Pournelle's The Mote in God's Eye (1974) depicts humanity's first contact with an alien species, the Moties, set within the far-future interstellar setting of Pournelle's codominium future history. The Gripping Hand continues that first-contact crisis years later, and Outies, written by J. R. Pournelle, carries the story forward into a new generation. Together the three books trace an escalating encounter between human and Motie civilizations within the codominium universe.
series53 books1917
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Barsoom is a fictional representation of the planet Mars created by American pulp fiction author Edgar Rice Burroughs. The first Barsoom tale was serialized as Under the Moons of Mars in pulp magazine The All-Story from February to July 1912 and published compiled as a novel as A Princess of Mars in 1917. It features John Carter, a late-19th-century American Confederate veteran who is mysteriously transported from Earth to the dying world of Mars where he meets and romances the beautiful Martian princess Dejah Thoris. Ten sequels followed over the next three decades, further extending his vision of Barsoom and adding other characters.
series19 books1972
completed
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The Heechee Saga, also known as the Gateway series, is a series of science fiction novels and short stories by Frederik Pohl. The Heechee are an advanced alien race that visited the Solar System hundreds of millennia ago and then mysteriously disappeared. They left behind bases containing artifacts, including working starships, which are discovered and exploited by humanity.
universe13 books1980
Start hereUplift · Start here
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No species, the Galactics insist, ever climbs to sapience alone. For a billion years the elder races have "uplifted" their chosen clients — reshaping some promising animal, gene by patient gene, into a thinking being, then binding it through long ages of indenture. Patron lifts client; client one day becomes patron; and every lineage traces back through the vast Galactic Library to the vanished Progenitors who began it all. Then a ragged band of primates arrives at the stars with no patron to claim them — wolflings, self-made, an affront to a hundred thousand years of law — and worse, these humans have already started uplifting neighbors of their own: the neo-dolphins and neo-chimpanzees of Earthclan. David Brin builds this galaxy across two trilogies. The first — Sundiver, the Hugo- and Nebula-winning Startide Rising, and the Hugo-winning The Uplift War — sends an expedition into the Sun, then follows the dolphin-crewed survey ship Streaker as it flees a discovery that sets fanatical star-clans at war, and a chimp-led resistance on an invaded colony world. The second sequence, Uplift Storm — Brightness Reef, Infinity's Shore, Heaven's Reach — descends to Jijo, a forbidden world where six fallen races hide as illegal settlers, and draws every loose thread toward a reckoning. Short fiction fills the margins. This is space opera with an ecologist's conscience: teeming with invented biologies, wry cross-species banter, and real unease about what we owe the minds we make. Begin with Startide Rising — the saga's beating heart, and readable on its own — or take Sundiver first and read straight through in publication order.
series5 books1980
part of Uplift Universe
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David Brin's Uplift trilogy opens with Sundiver, sending human explorers into the Sun itself, then follows a dolphin-crewed starship on the run from hostile aliens in Startide Rising and a fight over the colony world Garth in The Uplift War. The books sit inside Brin's wider Uplift Universe, built on the idea that spacefaring "patron" species genetically engineer younger "client" species into full sapience, with humanity an anomaly that reached the stars without a patron of its own.
series42 books1939
completed
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The Future History is a series of science fiction stories written by American author Robert A. Heinlein (1907–1988). It describes a projected future of the human race from the middle of the 20th century through the early 23rd century. The term Future History was coined by John W. Campbell Jr. in the February 1941 issue of Astounding Science Fiction. Campbell published an early draft of Heinlein's chart of the series in the May 1941 issue.
series10 books1950
completed
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Cities in Flight is a four-volume series of science fiction novels and short stories by American writer James Blish, originally published between 1950 and 1962, which were first known collectively as the "Okie" novels. The series features entire cities that are able to fly through space using an anti-gravity device, the spindizzy. The stories cover roughly two thousand years, from the very near future to the end of the universe. One story, "Earthman, Come Home", won a Retro Hugo Award in 2004 for Best Novelette. Since 1970, the primary edition has been the omnibus volume first published in paperback by Avon Books. Over the years James Blish made many changes to these stories in response to points raised in letters from readers.
series7 books1955
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Andre Norton's Solar Queen novels follow the crew of a free-trader starship under Captain Jellico as they scrape by hauling cargo and making first contact on the fringes of settled space. The first three books appeared in the 1950s; Norton returned to the series decades later and, from the 1990s on, completed it in collaboration with P. M. Griffin and Sherwood Smith. Across its seven novels the series keeps its ensemble trading-crew premise rather than following one continuous plot.
series16 books2005
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The Old Man's War series is a series of science fiction novels by John Scalzi. The first book in the series, Old Man's War, was first published in 2005 by Tor Books, and was nominated for the Hugo Award for Best Novel in 2006. In 2026 it was a finalist for the Hugo Award for Best Series.
series18 books1972
part of Humanx Commonwealth
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The Pip & Flinx novels follow Flinx, a young man with an unusual, mysterious origin, and his ever-present animal companion Pip, across Alan Dean Foster's Humanx Commonwealth setting. Beginning with The Tar-Aiym Krang (1972) — chronologically the second entry, since Foster later filled in Flinx's earlier life — the series grew to fifteen novels published between 1972 and 2017, mixing planetary adventure with a slowly unfolding personal mystery.
series7 books1959
completed
part of The Talents
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The Tower and the Hive series opens with The Rowan (1990), following an isolated but powerful telepath who is drawn out of her loneliness by a psychic call for help from a distant Talent facing an alien threat. Anne McCaffrey continued the story across four more novels, Damia, Damia's Children, Lyon's Pride, and the concluding The Tower and the Hive (1999), following later generations of a telepathic family staffing the Prime Towers that give a starfaring human civilization instant communication. The series is set later in the same Talents universe as McCaffrey's earlier Pegasus books.
series19 books1957
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The Childe Cycle is an unfinished series of science fiction novels by American writer Gordon R. Dickson. The name Childe Cycle is an allusion to "Childe Roland to the Dark Tower Came", a poem by Robert Browning, which provided inspiration for elements in the work. The series is sometimes referred to as the Dorsai series, after the Dorsai people who are central to it. The related short stories and novellas all center on the Dorsai, primarily members of the Graeme and Morgan families.
series5 books1939
completed
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The Voyage of the Space Beagle is a 1950 fix-up novel by A. E. van Vogt, stitched together from four previously published pulp stories into a single continuous account of the exploration ship Space Beagle's encounters with a series of dangerous alien life forms. Its episodic, crew-versus-monster structure reads as a loose sequence of adventures rather than one continuous plot.
universe48 books1952
Start hereFuzzy Sequence · Start here
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History does not repeat, Piper's chroniclers are fond of saying — it rhymes, and it rhymes in iron. Reckon the years from the first atomic pile, 1942, Year One of the Atomic Era, and follow the ledger forward some six thousand years: out of a nuclear war that nearly ended everything, up through the Terran Federation and its reach into the stars, down again through collapse and a long neobarbaric dark, and back up into the enlightened empires that rise from the ruins. It is one continuous future history — not a plot but a chronicle, worlds and centuries sharing a single unbroken timeline. H. Beam Piper assembled it in pieces through the 1950s and 60s, novels and novellas bound by chronology rather than by recurring heroes. The anchors are Little Fuzzy, a courtroom argument over whether a small golden native of Zarathustra is a person; Space Viking, raid and revenge amid the wreckage of the interregnum; and the Federation-era Four-Day Planet, The Cosmic Computer, and Uller Uprising. The eras sort cleanly — Federation, the System States War, the Space Vikings of the long dark, the Empire. After Piper's death in 1964 other hands took up the ledger: John F. Carr, who arranged the short fiction into the chronological Federation and Empire collections and carried on the Tanith and Space Viking line, plus Wolfgang Diehr's Fuzzy sequels and Dietmar Arthur Wehr's additions. The register is sober and engineer-eyed — competent men solving hard problems, empires ruled by benign despots, the cool conviction that civilizations rise and fall to the same recurring script. It ranges from the sunlit warmth of the Fuzzy books to the cold steel of a Viking raid. Newcomers start with Little Fuzzy, the warmest and most self-contained, or with Space Viking.
series5 books1933
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When Worlds Collide (1933) and its sequel After Worlds Collide (1934), written together by Edwin Balmer and Philip Wylie, follow a small group of survivors who escape a doomed Earth as the rogue planet Bronson Alpha destroys it, landing on its companion world Bronson Beta to begin again. The two novels form a self-contained disaster-and-survival duology.
Robert A. Heinleinstandalone novel1953
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Starman Jones, a 1953 science fiction novel by Robert A. Heinlein, features a farm boy who wants to go to the stars. Charles Scribner's Sons published the book as part of the Heinlein juveniles series.
series20 books1963
part of Dune Universe
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Frank Herbert's Dune Chronicles opens with 1965's Dune, set on the desert planet Arrakis where House Atreides takes control of the only source of the vital spice melange and young Paul Atreides is pulled into a struggle over its politics and religion. Herbert carried the story forward across five further novels — Dune Messiah, Children of Dune, God Emperor of Dune, Heretics of Dune, and Chapterhouse: Dune — following Paul's line over the following millennia, before Brian Herbert and Kevin J. Anderson later extended the saga. Many other editions of these six novels are omnibus and box-set repackagings rather than separate stories.
Robert A. Heinleinstandalone novel1957
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On a planet far distant from Earth, a lame beggar buys a young boy slave who has forgotten his origins. The beggar is more than he seems, and gives the boy an extensive education while employing him as an observer of activity in their city. Years later, the beggar is captured by the government, and the youth must escape the planet.
series14 books1993
part of Honorverse
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David Weber's Honor Harrington novels follow the title character's rise through the Manticoran navy in the 'Honorverse,' a space-opera setting built around Age-of-Sail-style naval combat, interstellar politics and a decades-long war between rival star nations. Beginning with On Basilisk Station, the core series runs to fourteen books, alongside spin-off subseries, prequels and shared-world anthologies also set in the Honorverse. It's one of the longest-running modern military science fiction series, published by Baen.
series5 books1970
completed
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The Catteni series is a tetralogy of science fiction novels by American writer Anne McCaffrey. In this universe, humans are slaves of aliens, the humanoid Catteni. Woven through all four of the books are details of the relationship between Kristin Bjornsen, a former slave, and Zainal, a renegade Catteni.
universe173 books1976
Start hereCompany Wars · The central sequence
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The dark between the stars belongs to no one, and everyone who lives out here knows it: the merchanter Families hauling cargo between stations that cannot feed themselves, the Earth Company clutching at colonies it can no longer supply, the Union breeding its cloned azi to settle worlds faster than birth allows. C. J. Cherryh's Alliance-Union is a future history of humankind's spread across the third and fourth millennia, told from inside the pressure — no clean empires, only stations, ships, treaties, and the people caught in the machinery of who holds the jump-points. The sequence runs from the first laborious pre-FTL stations through the Company Wars, the independence struggle that breaks over Pell in Downbelow Station (Hugo, 1981), to the genetics and cold politics of Union's homeworld in Cyteen (Hugo, 1988) and its sequel Regenesis. Around that spine cluster the merchanter novels of trader Families, the Faded Sun trilogy of human envoys among the martial alien Mri, and the Chanur books, narrated from the hierarchical, whiskered viewpoint of the hani. On the isolated world of Merovin, the Merovingen Nights anthologies open the setting to other hands — Mercedes Lackey, Janet and Chris Morris, Nancy Asire — a shared world braided into the whole. What sets it apart is intimacy at scale. Cherryh drops you without a map into a single skull and lets you assemble the politics from what that person fears and bargains for; the aliens are genuinely alien, loyalty is always provisional, and the real antagonist is usually logistics. Most books stand alone, in her words, "like real history." The surest way in is Downbelow Station — the war seen from one besieged station — then Cyteen, for the mind that shaped the other side.
series21 books1957
completed
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James Bolivar diGriz, alias "Slippery Jim" and "The Stainless Steel Rat", is a fictional character and a series of comic science fiction novels written by Harry Harrison.