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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 The Two Moons

anchored on:science fictionaliensnear futurehard science fictionfirst contactspace exploration+3 more

but

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 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 in which a buried family truth — hidden parentage, crimes, or shames — surfaces and reorders the present.
  • Stories driven by maneuvering for power — factions, conspiracies, and statecraft conducted in shadow.
  • Stories about rising against rulers — uprisings, resistance movements, and revolutions and their aftermaths.
  • 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.

                • Cover of Minervan Experiment / Giants
                  Minervan Experiment / Giants

                  series · 5 books · 1977

                  completed

                  similar byaliensspace explorationmysteriousscience fictionhard science fiction+3 more

                  The Giants series is a quintet of science fiction novels by James P. Hogan, published between 1977 and 2005. The series began with Inherit the Stars, published by Del Rey Books in May 1977.

                • Cover of Steal Across the Sky
                  Steal Across the Sky

                  Nancy Kress · standalone novel · 2009

                  similar byaliensnear futurespace explorationmysteriousscience fictionthe moonfirst contactother star systems

                  The aliens appeared one day, built a base on the moon, and put an ad on the internet. At first, everyone thought it was a joke. But it wasn't. This is the story of three volunteers who answered that ad, and what they found on Kular A and Kular B.

                • Cover of Encounter with Tiber
                  Encounter with Tiber

                  John Barnes & Buzz Aldrin · standalone novel · 1996

                  similar byaliensnear futurespace explorationinformativescience fictionhard science fictionfirst contactother star systems

                  Encounter With Tiber (ISBN 0-340-62451-5) is a 1996 science fiction novel written by former astronaut Buzz Aldrin and science fiction writer John Barnes. A working title, used on some advance covers for the British edition, was The Tides of Tiber.

                • Cover of Dragon's Egg
                  Dragon's Egg

                  series · 3 books · 1980

                  completed

                  similar byaliensspace explorationinformativescience fictionhard science fictionfirst contactother star systems+1 more

                  Robert L. Forward's Dragon's Egg (1980) follows first contact with the cheela, intelligent beings the size of sesame seeds living on the surface of a neutron star, where crushing gravity and fast-moving physics let them evolve from primitive agriculture to advanced technology in about a month of Earth time while human observers watch from orbit. The sequel Starquake (1985) follows the cheela's own development of space travel and a catastrophic starquake that devastates their neutron-star home, alongside the continuing story of the human crew observing them.

                • Cover of Project Hail Mary
                  Project Hail Mary

                  Andy Weir · standalone novel · 2021

                  similar bynear futurealiensspace explorationscience fictionhard science fictionfirst contact+1 more

                  Project Hail Mary is a 2021 hard science fiction novel by American writer Andy Weir. It centers on science teacher and former biologist Ryland Grace, who wakes up aboard a spacecraft, afflicted with amnesia.

                • Cover of The Lotus Caves
                  The Lotus Caves

                  John Christopher · standalone novel · 1969

                  similar bynear futurealiensspace explorationmysteriousscience fictionthe moon+1 more

                  Two boys living in a moon colony find an unrestricted buggy, allowing them to travel beyond their usual boundary. The find the journal of a missing early colonist, and it leads them to discover a hidden cave system containing a powerful, intelligent and apparently friendly alien.

                • Cover of A World of Difference
                  A World of Difference

                  Harry Turtledove · standalone novel · 1990

                  similar byaliensnear futurespace explorationinformativescience fictionfirst contactother star systems

                  A World of Difference is a 1990 science fiction novel by American writer Harry Turtledove.

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

                  Robert A. Heinlein · standalone novel · 1958

                  similar bynear futurealiensspace explorationscience fictionthe moon+2 more

                  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 Prelude to Space
                  Prelude to Space

                  Arthur C. Clarke · standalone novel · 1951

                  similar bynear futurespace explorationinformativescience fictionthe moonhard science fiction

                  Prelude to Space is a science fiction novel written by British author Arthur C. Clarke in 1947. It appeared for the first time in 1951 as a paperback from World Editions Inc, as number three in its series of Galaxy novels. Sidgwick & Jackson published it in the UK in 1953, followed the next year by a United States hardcover edition from Gnome Press and a paperback from Ballantine Books.

                • Cover of All Judgment Fled
                  All Judgment Fled

                  James White · standalone novel · 1968

                  similar byaliensnear futurespace explorationmysteriousscience fictionfirst contact

                  From the front flap of the Rapp first edition: It is the spring of 1978 and a gigantic alien spaceship has entered the solar system and taken up an orbit some sixty million miles from the Sun. The Ship neither signals nor replies in any detectable fashion to signals directed towards it. Silently and, some think, implacably, it orbits like some tremendous battleship cruising off the coast of a tiny, backward island. Inevitably there are natives on the island whose curiosity outweighs their fear and six men in two tiny sophisticated dug-out canoes go out to satisfy their curiosity... All Judgment Fled is not another story about super heroes solving alien communications problems with the aid of super scientific and infallible translation devices. Instead it concerns the reactions of six very ordinary people to what is probably the most extraordinary situation of all - the first meeting with an extraterrestrial race.

                • Cover of Starplex
                  Starplex

                  Robert J. Sawyer · standalone novel · 1996

                  similar bynear futurealiensspace explorationmysteriousscience fictionfirst contactother star systems

                  The only novel of its year to be nominated for both the Hugo and Nebula Awards. Starplex won Canada's Aurora Award for best novel of the year. For nearly twenty years Earth's space exploration had exploded outward, thanks to a series of mysterious, artificial wormholes. No one knows who created these interstellar passages, yet they have brought the far reaches of space immediately close. For Starplex Director Keith Lansing, too close. Discovery is superseding understanding. And when an unknown vessel — with no windows, no seams, and no visible means of propulsion — arrives through a new wormhole, an already battle-scarred Starplex could be the starting point of a new interstellar war . . . ROBERT J. SAWYER has won the Hugo, Nebula, John W. Campbell Memorial, Seiun, and Aurora Awards, all for best science fiction novel of the year. His novels include Hominids, Rollback, Wake, and FlashForward (basis for the TV series).

                • Cover of Childhood's End
                  Childhood's End

                  Arthur C. Clarke · standalone novel · 1953

                  similar byaliensnear futurescience fictionfirst contact+1 more

                  Childhood's End is a 1953 science fiction novel by the British author Arthur C. Clarke. The story follows a peaceful alien invasion of Earth by mysterious Overlords, whose arrival begins decades of apparent utopia under indirect alien rule, at the cost of human identity and culture.

                • Cover of The Hammer of God
                  The Hammer of God

                  Arthur C. Clarke · standalone novel · 1993

                  similar bynear futurespace explorationinformativescience fictionhard science fiction+2 more

                  The Hammer of God is a science fiction novel by Arthur C. Clarke originally published in 1993. Set in the year 2109, it deals with the discovery of an asteroid to be on course to collide with Earth and depicts the mission for deflecting the asteroid by using fusion thermal rockets.

                • Cover of Saturn Rukh
                  Saturn Rukh

                  Robert L. Forward · standalone novel · 1997

                  similar byaliensnear futurespace explorationinformativescience fictionhard science fictionfirst contactouter planets & moons

                  Saturn Rukh is a hard science fiction novel written by the United States physicist Robert L. Forward. It was first published in hardcover in March 1997 by Tor Books. Saturn Rukh is themed around human contact with alien organisms on the gaseous planet Saturn. Like many of Forward's books, the novel is a speculation of the nature of intelligent life in a non-Terran ecosystem, in this case the atmosphere of a gas giant.

                • Cover of Sparrow
                  Sparrow

                  series · 2 books · 1996

                  similar byaliensnear futurescience fictionfirst contactother star systems+1 more

                  Mary Doria Russell's The Sparrow (1996) follows a Jesuit-led mission to the planet Rakhat after radio signals from Alpha Centauri reveal it hosts intelligent life, alternating between the expedition and the traumatized return of its sole survivor, Father Emilio Sandoz, as he tries to explain what happened. The sequel Children of God (1998) follows Sandoz back to Rakhat and continues working out the theological and political fallout of first contact between humans and the planet's two native species.

                • Cover of The Gates of Heaven
                  The Gates of Heaven

                  Paul Preuss · standalone novel · 1980

                  similar byaliensnear futurespace explorationmysteriousscience fictionfirst contactother star systems

                  "At Project cyclops, a room filled with scientists and military personnel is plunged into stunned silence. Above the crackling static coming from the star Tau Ceti, they hear a voice. A human voice." - from back cover

                • Cover of Wheelers
                  Wheelers

                  Ian Stewart & Jack Cohen · standalone novel · 2000

                  similar byaliensspace explorationinformativescience fictionhard science fictionfirst contactother star systems

                  Wheelers is a hard science fiction novel written by English mathematician Ian Stewart and reproductive biologist Jack Cohen. The book was originally released in hardcover form in the year 2000, and a more common paperback printing was begun in 2001. It has enjoyed modest commercial success and is perhaps best known for its conceptions of alien zoology and intelligence—hallmarks of Cohen's work as a consultant on exobiology for books, movies, and television.

                • Cover of Contact
                  Contact

                  Carl Sagan · standalone novel · 1985

                  similar byaliensspace explorationscience fictionfirst contacthard science fiction+1 more

                  From the front flap of the Simon and Schuster first edition: For centuries humanity has dreamed of life and intelligence beyond the Earth; for decades scientists have searched for it in every corner of the sky; for years Project Argus, a vast, sophisticated complex of radio telescopes, has listened for a signal indicating the existence, somewhere in the universe, of extraterrestrial intelligence. Then, one afternoon, the course of human history is changed, abruptly and forever. The Message, awaited for so long, its very possibility doubted by so many, arrives. Contact has been made. Life, intelligence, someone, something beyond Earth, 26 light-years away, in the vicinity of the star Vega, is calling, beaming across space a wholly unexpected message to say that we are not - have never been - alone. In Contact, Carl Sagan, whose Cosmos enthralled millions of readers and television viewers, has brilliantly employed the freedom of fiction to imagine the greatest adventure of all - humanity's first encounter with other intelligent beings. But the novel is not only about contact between humans and extraterrestrials; it is also about contact, down here on Earth, with each other and ourselves. At its center is a brilliant scientist, Eleanor Arroway, director of Project Argos, who is the first to realize that chapter one of human history is over. It is she who is instrumental in decoding the Message - and in persuading world leaders not to treat it as a threat - she who finds her own life changed by the immense challenge of responding to the Message; she who finally journeys out to experience, in circumstances at once profoundly religious and scientific, the most fateful encounter in human history.

                • Cover of Ancient Shores
                  Ancient Shores

                  series · 3 books · 1996

                  similar bynear futurealiensmysteriousscience fiction+3 more

                • Cover of Heechee
                  Heechee

                  series · 19 books · 1972

                  completed

                  similar byaliensspace explorationscience fictionother star systems+1 more

                  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 Stranger in a Strange Land
                  Stranger in a Strange Land

                  Robert A. Heinlein · standalone novel · 1961

                  similar byaliensnear futurescience fictionfirst contact

                  Stranger in a Strange Land is a 1961 science fiction novel by the American author Robert A. Heinlein. It tells the story of Valentine Michael Smith, a human who comes to Earth in early adulthood after being born on the planet Mars and raised by Martians, and explores his interaction with and eventual transformation of Terran culture.

                • Cover of Cavor
                  Cavor

                  series · 2 books · 1901

                  similar byspace explorationaliensscience fictionthe moon+2 more

                  H. G. Wells's 1901 novel The First Men in the Moon is narrated by the businessman Bedford, who joins the reclusive scientist Cavor after Cavor invents cavorite, a gravity-blocking substance that carries the two men to the Moon. There they discover a vast underground civilization of insect-like Selenites, and the expedition that began as a hunt for lunar minerals turns into an encounter with an alien society. It is a standalone novel; later editions crediting Stephen Baxter add an introduction or afterword rather than a continuing story.

                • Cover of Mission to Methone
                  Mission to Methone

                  Les Johnson · standalone novel · 2018

                  similar byaliensnear futurespace explorationmysteriousscience fictionfirst contact

                  "The year is 2065 and an accidental encounter in space leads to the discovery that we are not alone and that our continued existence may be in jeopardy. Chris Holt, working at the Space Resources Corp., discovers that one of the asteroids he surveying for mining is actually a derelict spaceship. What Earth doesn't know is that across the galaxy, a war has been underway for millennia. A war between alien civilizations that have very different ideas about what should be done about emerging spacefaring civilizations like our own. The artificial intelligence resident in the derelict has been in our solar system since before the dawn of human civilization, watching, waiting and keeping quiet lest the war return and wipe out humanity"--

                • Cover of The Colors of Space
                  The Colors of Space

                  Marion Zimmer Bradley · standalone novel · 1963

                  similar byaliensspace explorationmysteriousscience fictionother star systems

                  The Lhari seem peaceful and friendly, but they go to some lengths to protect their monopoly on faster-than-light travel. One young man is sent to discover their secrets.