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Built on ISFDB, Wikipedia, Wikidata and Open Library. Curated reading orders carry their reasoning on the page; the rest follow publication order. Data sources & licenses

© Loreful · data: ISFDB · CC BY

More like Alien Secrets

anchored on:science fictionspaceother star systems

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Mood

The mood the book leaves you in.

  • The reading experience is propelled by journeys, exploration, and physical risk; excitement and forward momentum dominate over dread or introspection.
  • Joy and loss are deliberately mixed; the resolution grants characters something real while taking something else away, leaving warmth and sorrow together.
  • The book demands work from the reader — dense prose, difficult structure, unfamiliar ideas, or morally uncomfortable material — as part of its intended effect.
  • Grim events, cruelty, or despair dominate the atmosphere, and the book does not soften them with comfort or comic relief.
  • The atmosphere is quietly unsettling — wrongness, unease, and the uncanny pervade the book without necessarily escalating into overt horror.
  • The book is built to move the reader; character feeling is foregrounded and major scenes aim at a strong emotional response.
  • Humor is a primary aim and the prose plays for laughs — comic situations, wit, or dialogue produce sustained comedy, not occasional levity.
  • The book insists that things can improve; effort and decency are shown to matter, and the arc bends toward better outcomes even through hardship.
  • The book teaches as it goes — real facts, history, science, or craft are conveyed in enough depth that learning is part of the reading experience.
  • The book is designed to uplift and motivate, presenting perseverance or achievement in a way that invites the reader to aspire or act.
  • The overall register is cheerful and easygoing; stakes are kept gentle and the book avoids dwelling on pain or dread.
  • Withheld information drives the experience; the book sustains enigmas and secrets the reader wants resolved, whatever its genre.
  • The book is contemplative and inward-looking, giving more weight to thought, memory, and meaning than to external events.
  • The book works as comfort reading — low tension, a soothing pace, and an atmosphere the reader can unwind in.
  • Grief, loss, or melancholy set the dominant register, and the book lets sorrow stand rather than resolving it into comfort.
  • Sustained suspense is the point; the book keeps the reader braced for what happens next through danger, pressure, or impending revelation.
  • Playful invention and charm define the register — fanciful conceits, light absurdity, and a narration that delights in its own oddity.

About

What the story runs on.

  • Stories in which extraterrestrial beings are central — as characters, cultures, or the object of the plot.
  • Stories about venturing into space to explore — survey missions, astronauts, and the frontier of the unknown beyond Earth.
  • Stories about minds with paranormal abilities — telepathy, telekinesis, precognition, empathy — and how societies handle those who have them.
  • Stories structured as a quest — a journey undertaken to find, deliver, or destroy something of great import.
  • Stories in which staying alive against nature, catastrophe, or scarcity is the central problem.
  • Stories of lovers kept apart by law, family, faith, or station, where the obstacle to love is the plot.
  • Stories in which a friendship — its making, testing, or loss — is the emotional center.
  • Stories of growing up — a young protagonist crossing from childhood into adult knowledge and responsibility.
  • Stories about who a character truly is — self-discovery, doubled lives, and the search for a self.
  • Stories driven by maneuvering for power — factions, conspiracies, and statecraft conducted in shadow.
  • Stories in which war itself is the subject — combat, occupation, and what warfare does to soldiers and civilians.
  • Stories organized around investigating a killing — the case, the clues, and the pursuit of the killer, in any genre's clothing.

Shelf

Where it sits in the library.

    • Fiction built on magic or other supernatural elements that have no scientific explanation.
    • Secondary-world fantasy at large scale, where the fate of nations or the world turns on the protagonists' struggle.
    • Fantasy set in a recognizably modern city or contemporary world where the supernatural intrudes on everyday life.
    • Fantasy that blends in horror's atmosphere and imagery, keeping a fantastical frame around grim or frightening material.
    • Action-driven fantasy following warriors or rogues with personal stakes against sorcerous threats, rather than world-spanning conflicts.
    • Fantasy set in a real historical period or a close analogue of one, with magic woven into the era.
    • Fantasy in which protagonists cross from the ordinary world into another world through a portal or similar passage.
    • Fiction that retells or reworks a traditional fairy tale in a new form or setting.
    • Fantasy drawing directly on myths, legends, and folklore, retelling them or building on their figures and logic.
    • Fantasy of ghosts, vampires, shapeshifters, psychics, and similar phenomena, usually set in an otherwise ordinary world.
    • Fiction mixing science-fictional trappings with overtly magical or impossible elements in one setting.
    • Low-stakes fantasy emphasizing comfort, community, and everyday pleasures over conflict and peril.
    • Speculative fiction of pervasive moral ambiguity, violence, and cynicism that rejects heroic conventions — fantasy and SF alike.
      • Fiction that extrapolates from science and technology — future societies, space travel, or speculative inventions — within at least nominally natural laws.
      • Science fiction of interstellar scope — starships, galactic polities, and adventure across star systems.
      • Science fiction committed to scientific rigor, where technical plausibility constrains the story.
      • Science fiction centered on armed forces and warfare, told largely from a military point of view.
      • Science fiction of networked, corporate-dominated near futures, pairing high technology with social decay.
      • Science fiction styled on nineteenth-century steam-powered technology, often in a Victorian or pseudo-Victorian setting.
      • Fiction depicting an oppressive or catastrophic society, presented as a warning.
      • Fiction set after civilization's collapse, following survivors in the ruins of the old world.
      • Fiction in which characters move between past and future, and the mechanics or consequences of that travel drive the plot.
      • Fiction exploring a world where a historical event went differently and history diverged from ours.
      • Science fiction about humanity's first encounter and communication with an alien intelligence.
      • Science fiction in which extraterrestrial forces attack or occupy Earth and humanity resists.
      • Fiction whose primary aim is to frighten or unsettle the reader through dread, menace, or the monstrous.
      • Horror of vast, indifferent, incomprehensible entities before which humanity is insignificant, in the Lovecraft tradition.
      • Horror of decaying houses, buried family secrets, and oppressive atmosphere in the Gothic literary tradition.
      • Horror centered on hauntings and the returning dead.
      • Horror located in the mind — paranoia, obsession, and unreliable perception rather than external monsters.
      • Horror built around the reanimated dead and survival amid their outbreaks.
      • Horror defined by explicit, transgressive gore that refuses to cut away from violence.
      • Speculative fiction of the strange and uncanny that resists both natural explanation and standard genre categories.
      • Fiction organized around solving a crime or puzzle, typically following an investigator toward the identification of a culprit.
      • A puzzle-first mystery that lays out clues so the culprit's identity can be deduced before the reveal.
      • Crime fiction of moral ambiguity, fatalism, and hard-edged style, set among the corrupt and the doomed.
      • A mystery following the realistic routines of police work — forensics, interviews, and case-building.
      • A gentle mystery with an amateur sleuth, a small community, and violence kept off the page.
      • A mystery set in a past era, where the investigation works within that period's methods and society.
      • Fast-paced fiction driven by imminent danger, pursuit, or high-stakes conspiracy, built to sustain tension.
      • A thriller of espionage — agents, tradecraft, and intelligence services in conflict.
      • A thriller centered on lawyers and the courtroom, where litigation carries the suspense.
      • A thriller driven by detailed contemporary or near-future technology, often military or scientific.
      • A thriller whose tension comes from mental states and manipulation between characters rather than external action.
      • Fiction whose central plot is a romantic relationship and its development toward an emotionally satisfying resolution.
      • Romance in which one or both partners are supernatural beings, blending fantasy elements into the love story.
      • A fantasy-romance hybrid in which the romantic arc and the fantasy plot carry equal weight.
      • Romance set in a past era, with courtship shaped by the period's society and manners.
      • Romance set in the present day, without supernatural or historical elements.
      • Fiction set in a real past period, where the historical setting materially shapes characters and events.
        • General and literary fiction emphasizing prose style, character interiority, or formal ambition over genre plot conventions.
        • Fiction in a realistic world where magical events occur and are treated as ordinary, in the tradition of Latin American literature.
        • Fiction that ridicules people, institutions, or society in order to criticize them.
        • Fiction of dreamlike, irrational imagery and logic that breaks from realistic representation.
        • Fiction that plays with narrative convention through metafiction, fragmentation, and self-reference.
        • Fiction propelled by journeys, exploration, and physical peril, where action and survival carry the plot.
        • Adventure fiction of ships and seafaring — naval engagements, voyages, and life at sea.
        • Fiction of the American frontier West — gunmen, ranchers, and lawmen, typically in the late nineteenth century.
        • Fiction centered on soldiers, campaigns, and the experience of warfare, historical or imagined.
          • Fiction written primarily to amuse, using comedic situations, wit, or parody as its organizing principle.
            • Multi-generational fiction following a family or dynasty across decades, with inheritance and kinship as the through-line.
              • Fiction whose world runs on explicit game mechanics — levels, stats, and skills that characters can see and exploit.
                • Fiction about costumed or superpowered heroes and their conflicts with comparable villains.

                Practical

                How long a commitment, whether it stands alone, and whether it has finished.

                Tap a chip to ask for it · tap again to rule it out · once more to clear. Numbers show what would be left.

                • T
                  Thistledown

                  series · 5 books · 1978

                  completed

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                • Cover of Cities in Flight
                  Cities in Flight

                  series · 10 books · 1950

                  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.

                • Cover of H. G. Wells' War of the Worlds
                  H. G. Wells' War of the Worlds

                  universe · 65 books · 1898

                  Start hereThe War of the Worlds · Start here

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                  No one would have believed, in the closing years of the nineteenth century, that human affairs were being watched keenly and closely from the timeless worlds of space. And then the cylinders fell. H. G. Wells' War of the Worlds opens in the quiet of the Surrey commons, where a falling star proves to be the first Martian craft — and from the pit rise the towering tripods, the Heat-Ray, the choking Black Smoke and the creeping red weed, wielded by minds that regard mankind much as we regard the creatures we boil for supper. This is invasion rendered as natural disaster: cold, methodical, and vast beyond argument. Wells' 1898 novel is the seed; everything else grows from that Martian soil. The catalogue gathers direct sequels and continuations alongside a wide field of other hands. In War of the Worlds: Global Dispatches the invasion is retold across the whole planet through the eyes of Twain, Verne, Tolstoy, Lowell and Kipling; in the Manly Wade and Wade Wellman crossover, Sherlock Holmes, Watson and Professor Challenger take the field against the machines; and Scott Washburn's Great Martian War stretches the fighting into a decades-long alternate history of steam, artillery and grinding attrition. It is a loose shared world — no single decreed sequence, many voices answering one calamity. What sets this world apart is its refusal of heroics: the invaders fall not to generals but to the smallest things of Earth, humbling and indifferent. Begin, always, with Wells' original novel — it is short, and it is the ground every later book stands upon. From there follow your appetite: Global Dispatches for the panorama, the Holmes campaign for adventure, Washburn for the long war.

                • Cover of Have Space Suit - Will Travel
                  Have Space Suit - Will Travel

                  Robert A. Heinlein · standalone novel · 1958

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                  From the back cover of the Del Rey 9th printing: "Skyjacked - Everything happened at once. One minute Kip Russell was walking about in his own backyard, testing out an old space suit and dreaming about going to the moon - and the next he was out cold and the captive of an insidious space pirate. The whole thing seemed like a very bad dream until he discovered he wasn't the only prisoner on board. Then the reality of the situation became inescapable. He - along with the daughter of a world-renowned scientist and a beautiful creature from an alien planet - had been skyjacked by a monstrous extraterrestrial and they were on their way to the Moon... a journey toward a fate worse than death!"

                • Cover of Academy / Priscilla (Hutch) Hutchins
                  Academy / Priscilla (Hutch) Hutchins

                  series · 16 books · 1983

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                  Jack McDevitt's Academy novels follow Priscilla 'Hutch' Hutchins, a starship pilot turned administrator, across a series of archaeological mysteries involving vanished alien civilizations and inexplicable ancient artifacts scattered through human space. Beginning with The Engines of God, the series treats deep time and the near-total absence of intelligent alien life as its central mystery, favoring slow-burn discovery over action. McDevitt returned to Hutch across three decades of publication.

                • Cover of Moties
                  Moties

                  series · 4 books · 1974

                  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.

                • Cover of Ringworld
                  Ringworld

                  series · 5 books · 1970

                  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

                • Cover of Salvation
                  Salvation

                  series · 3 books · 2018

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                  By 2204, instantaneous jump-gate travel has made distance nearly meaningless, connecting Earth to its scattered colonies in a single step -- until a crashed alien ship of unknown origin turns up on a world eighty-nine light years away, carrying something far more dangerous than wreckage. Peter F. Hamilton's Salvation follows the investigation team sent to assess the find, one of whom may not be who they claim, while a second timeline set generations later shows the far-future fallout of what they discover. The trilogy continues through Salvation Lost and The Saints of Salvation.

                • Cover of Forever War
                  Forever War

                  series · 10 books · 1972

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                  Joe Haldeman's The Forever War (1974) follows a soldier conscripted into a centuries-long interstellar war against the alien Taurans, using relativistic space travel so that months spent in transit correspond to years or decades passing back on Earth. Haldeman later returned to the same conflict in Forever Peace (1997), a thematically connected but separate story, and Forever Free (1999), a direct sequel set years after the original war's end. The first novel won the Hugo, Nebula, and Locus awards and is considered a foundational work of military science fiction.

                • Cover of Ender's Shadow
                  Ender's Shadow

                  series · 5 books · 1999

                  part of Ender's Game Universe

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                  Orson Scott Card's Ender's Shadow retells the events of Ender's Game from the perspective of Bean, a physically stunted but ferociously intelligent street child recruited into the same Battle School program as Ender Wiggin. It launches the Shadow series, which follows Bean and other secondary Battle School characters into the political aftermath of the Formic Wars back on Earth, running parallel to and eventually past the timeline of Card's main Ender Quintet.

                • Cover of Foundation Universe
                  Foundation Universe

                  universe · 123 books · 1940

                  Start hereFoundation · Start here

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                  There is a science that reads the future of quadrillions the way an astronomer reads the orbits of stars. It is called psychohistory, and its equations foresee something the ruling Galactic Empire cannot admit: the throne is rotting, and thirty thousand years of barbarism are coming. One man, Hari Seldon, cannot stop the fall. He can only shorten it — by seeding a Foundation of scholars at the rim of the galaxy, a fragile institution built to carry knowledge across the dark and cut the interregnum to a single millennium. This is a universe told in the register of history itself: the long view, the calm of deep time, empires measured in centuries and men measured against them. The spine is Asimov's original trilogy — Foundation, Foundation and Empire, Second Foundation — followed decades later by the sequels Foundation's Edge and Foundation and Earth and the prequels Prelude to Foundation and Forward the Foundation. Late in life Asimov braided this in with his other future histories: the Robot novels of detective Elijah Baley and his humaniform partner R. Daneel Olivaw (The Caves of Steel, The Naked Sun, The Robots of Dawn, Robots and Empire) and the early Galactic Empire novels (Pebble in the Sky and its kin), until one continuous chronicle ran from the first thinking robots to the Second Empire. Other hands extend it — the Second Foundation Trilogy by Gregory Benford, Greg Bear, and David Brin, and shared-world spinoffs such as Robot City — so the corpus sprawls beyond a single author's tidy shelf. What distinguishes it is that the drama is intellectual: crises resolved by insight, nerve, and dialogue rather than fleets and blades, each turn hinging on the hidden logic of the Seldon Plan. Begin where readers have always begun — with Foundation, and the original trilogy in publication order. The rest opens outward from there.

                • Cover of Heechee
                  Heechee

                  series · 19 books · 1972

                  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.

                • Cover of Uplift Universe
                  Uplift Universe

                  universe · 13 books · 1980

                  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.

                • Cover of Uplift
                  Uplift

                  series · 5 books · 1980

                  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.

                • Cover of The Lightspeed Trilogy
                  The Lightspeed Trilogy

                  series · 4 books · 2016

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                  Ken MacLeod's recent trilogy imagines the accidental discovery of faster-than-light travel by a present-day physicist and the political fallout once humanity gets access to a wider galaxy that turns out not to be empty. Beyond the Hallowed Sky opens on an Earth still riven by bloc politics as the discovery becomes a new front in great-power rivalry, with the sequels carrying the consequences off-world. It treats first contact as a geopolitical problem as much as a scientific one.

                • Cover of Pip & Flinx
                  Pip & Flinx

                  series · 18 books · 1972

                  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.

                • Cover of Cosmic Trilogy (C. S. Lewis)
                  Cosmic Trilogy (C. S. Lewis)

                  series · 4 books · 1938

                  completed

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                  The Space Trilogy is a series of science fiction novels by British writer C. S. Lewis. The trilogy consists of Out of the Silent Planet (1938), Perelandra (1943), and That Hideous Strength (1945). A philologist named Elwin Ransom is the protagonist of the first two novels and an important character in the third.

                • OU
                  Orphan Universe

                  series · 9 books · 2004

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                • Cover of Proxima (Stephen Baxter)
                  Proxima (Stephen Baxter)

                  series · 6 books · 2011

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                  Stephen Baxter's Proxima follows a reluctant human colonist settled on a world orbiting Proxima Centauri as part of a secretive, one-way colonization program, intercut with political maneuvering back in a transformed solar system. Its sequel Ultima follows the discovery of alien technology on that world into a far stranger turn involving alternate versions of history. Both are hard science fiction concerned with the practicalities and politics of colonizing an alien world across interstellar distances.

                • HC
                  Heaven Chronicles / Zones of Thought

                  series · 8 books · 1976

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                • Cover of Tower and the Hive
                  Tower and the Hive

                  series · 7 books · 1959

                  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.

                • Cover of Into the Looking Glass
                  Into the Looking Glass

                  series · 4 books · 2005

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                • Cover of Nicholas Seafort
                  Nicholas Seafort

                  series · 7 books · 1994

                  completed

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                  The Seafort Saga is a series of science fiction novels written by American author David Feintuch. The novels are set from the late 22nd century to the mid-23rd century and relate the adventures of Nicholas Seafort, an officer in the (fictional) UNNS| United Nations Naval Service. The series is a collection of personal accounts, usually from the perspective of Nicholas Seafort, describing Seafort's adventures, beginning as a lowly midshipman, to the elected leader of earth, and finally to the captain of the UNNS flagship Olympiad. Although most books in the series are told from a single perspective, usually Seafort's, Voices of Hope is a collection of accounts from several sources: Seafort's son, PT, the son of a friend of Seafort's, and a transient boy named Pook. Additionally, Children of Hope is narrated by Randy Carr, the son of a close friend of Seafort.

                • Cover of The Science Fiction Hall of Fame
                  The Science Fiction Hall of Fame

                  series · 11 books · 1895

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