The Lunar Trilogy or The Moon Trilogy (Polish: Trylogia księżycowa) is a trilogy of science fiction novels by the Polish writer Jerzy Żuławski, written between 1901 and 1911. It has been translated into Russian, Czech, German, English and Hungarian, and has been reprinted several times in Poland. They are his best-known works.

Summary The first volume, Na Srebrnym Globie (On the Silver Globe; first book edition: Lwów, 1903) describes, in the form of a diary, the story of a marooned expedition of Earth astronauts who find themselves stranded on the Moon and founded a colony there. After several generations, they lose most of their knowledge and are ruled by a religious cult. The second volume, Zwycięzca (The Conqueror or The Victor; first book edition: Warsaw, 1910), focuses upon the colonists' anticipated Messiah, another traveler from Earth. After initial success, he fails to meet their expectations and is killed in an allegory to the death of Jesus Christ. The third volume, Stara Ziemia (The Old Earth; first book edition: Warsaw, 1911). describes the visit of two Lunar colonists to 27th-century Earth.

Volume 1: Na Srebrnym Globie (On the Silver Globe) [first edition—Lwów, 1903]

On the Silver Globe is the initial book of the trilogy, setting forth in first-person narrative the odyssey and subsequent tribulations of a disastrously miscalculated expedition to the Moon with four men and one woman. As part of the same mission, a second rocketship with two French voyagers, the brothers Remogner, is propelled towards the silver globe immediately afterwards. They, too, are lost, presumably after crashing upon the lunar surface.

The reader, however, is only privy to the circumstances surrounding the voyage of the first rocketship. At the very beginning of the narrative, the project's creator and leader, Irish astronomer O'Tamor, whom the readers of this chronicle never come to know, is dead as a result of the landing impact. Another member, English physician Tomasz (Thomas) Woodbell, succumbs to his injuries soon thereafter, leaving his fiancée Marta (Martha), a secret substitute for a German participant who backed out at the last minute, with the two remaining men, one of whom is Jan Korecki [yahn koh-RETZ-kee], the Polish narrator. The other voyager, and Korecki's rival for Marta, is the Brazilian-Portuguese engineer Piotr (Peter) Varadol.

There is no hope of return or rescue, but there is the possibility of survival on the other, Earth-like, though rugged and desolate, side of the Moon which has limited oxygen and water. After the first two chapters, Korecki's narrative focuses on the tormented relationship of Marta and Varadol as they produce the first generation of physically stunted children, with the narrator as the heartbroken, increasingly isolated observer and chronicler. The descendants of these space pioneers, whose initial generations are all the product of brother-sister incest, eventually populate the livable part of the planet, calling themselves Selenites. They create a religion based around the coming of a savior who will enable them to fulfill their destiny of someday returning to the planet of their ancestors, Earth.

Nearly half a century after his arrival, with Marta and Varadol long gone, the aged, dying Korecki struggles towards the original landing site and, with his final effort, dispatches the chronicle we have just read towards his home planet via the single message missile that was attached to the original rocketship for just such a purpose.

A brief "prologue" by an unnamed Earth observer, written as part of the plot, opens On the Silver Globe by reminiscing about the expedition fifty years after its departure, discussing the reaction of Earth's inhabitants to the presumed loss of the voyagers and then describing how Korecki's missile, aimed towards K... [likely meant to represent Kraków, where the story was written] observatory, is recovered by an assistant employed there. The charred pages contained within the missile are painstakingly transcribed by the assistant and subsequently presented for consideration by us, the readership of future Earth.

Volume 2: Zwycięzca (The Conqueror) [first edition—Warsaw, 1910]

The Conqueror, the longest and most complex of the three volumes, takes place centuries after the original voyage. It begins with the landing on the Moon of a rocketship, the first arrival from Earth since the two initial expeditions. The new space vehicle, built by scientist Jacek as a much-improved prototype for a projected but abandoned second series of lunar expeditions, bears a single, unauthorized passenger—Jacek's friend Marek (Mark), an adventurous young space technology planner, whom the physically and spiritually dwarfed Selenite humans hail as their long-awaited Savior. (Marek, knowing nothing of the Selenites' existence, had merely intended to investigate what happened to the original expedition, then return to Earth.)

The desperate Selenites, who have developed a crudely organized and unequal but nevertheless functional agricultural society, are on the verge of losing their generations-long struggle against enslavement by the original ruler-inhabitants of the Moon, the telepathic, black-winged, devil-like Szerns (Sherns) who rise up from the hellish bowels of the Moon's bottomless caverns. Death and suffering abound. Extremely intelligent and ruthless, and with organs able to produce electric discharges much like an electric eel, the Szerns rule the Selenites with an iron hand and extract from them a tribute in produce, services and offspring. The Szerns also rape Selenite women to breed human-Szern hybrids: when the soft white tentacles of a Szern, hidden beneath its wings, grip and electrically shock a female Selenite, she conceives and bears a diminished, intellectually stunted hybrid being known as a Deathling (mortes). Unwaveringly faithful slaves to the Szerns, the Deathlings are treated little better than dogs and are trained to hate and persecute the Selenites. The Selenites hate the Deathlings even more than the Szerns, and any Selenite woman impregnated by a Szern is stoned to death.

Based on scraps of Christian teaching and stories passed down orally, the Selenites have developed their own belief system, the Religion of the Coming, centered around the hope that someone will come from Earth to rescue them from their fate. To this end, a religious order maintains a ceaseless vigil at the landing site of the original expedition. When Marek's ship touches down (Jacek had programmed the ship to arrive at the original landing site), he is clamorously received by an overjoyed crowd who are convinced that Marek is their Savior and will deliver them from the domination of the Szerns. Marek is brought to the Selenite capital to be received by the Head Priest, Malahuda. Rather than being overjoyed at Marek's arrival, the wise Malahuda is instead troubled, as he recognizes the potential for societal turmoil and realizes that the religion may not survive if its central founding prophecy is fulfilled. Faced with a choice of declaring Marek to be the messiah or declaring him to be a false messiah, Malahuda instead resigns his position, casts off his robes and enters into retirement.

Malahuda's granddaughter falls in love with Marek, while also being terrified by the sacrilegious nature of her feelings toward him. In turn, Marek - treated by the Selenites as a living god - merely considers her affections amusing and pays her little attention, treating her almost as a child. Fuelled by a wave of religious fervour, the Selenites storm the Szern stronghold that rules their territory (which Zulawski based on Warsaw Citadel, built in the 19th century to bolster imperial Russian control of occupied Poland). The Szern and Deathling forces are put to the sword, and only the mind-controlling, Lucifer-incarnate head Szern, Awij [AH-veey], escapes. The injured Awij hides in the Selenite temple but is captured by Malahuda's granddaughter. Marek resists the popular clamour for Awij's execution and instead imprisons him in the Temple's sacred crypt, hoping to return to Earth with him as proof of extraterrestrial life once his travails on the Moon are complete.

Spurred on by their success in conquering the Szern fortress, the Selenites mobilize a large armed force and, headed by Marek, stealthily cross a lunar sea by night to attack the Szern homeland. The Szerns are taken by surprise and are killed in their thousands, but strike back. As the war rumbles on and becomes more complex, religious unrest develops in the Selenite capital, with a leading member of the religious order publicly doubting Marek's status as the messiah and plotting to dethrone him in his absence. The new Head Priest, Sewin, becomes aware of this and decides to tolerate it so that if Marek fails or the public turns against him, there will be a reserve leader ready to take his place. Doubt and resentment grow further when Marek attempts to reorganize Selenite society along socialist lines, and when he proves unable to bring back to life those who have fallen in the conflict (Selenite religious teachings hold that their savior would be able to raise the dead). Still imprisoned the temple crypt, Awij uses his cunning and telepathy to convince Malahuda's granddaughter to release him. During his escape, he fatally electrocutes several Selenites, including Malahuda. But as the war is continuing to go well overall and the news from the front is good, the Selenites are largely indifferent to his escape.

Marek's forces are gradually thinning, and ammunition for the war with the Szerns is beginning to run short. As the Selenite forces advance into the depths of the Szern homeland, they encounter massive resistance and only take the capital with great difficulty. Awij (who has returned to the Szern capital) again evades capture, seemingly escaping through doors that are locked and barred, defying all reason. The city has unusual properties, and the Selenites are forced to abandon it again. Ultimately, after undergoing unspeakable psychological torment, Marek wins the battle of wills and temptation with Awij, thus ending the Szerns' evil reign. For Marek, however, it is a pyrrhic victory. As the only one who had the ability to conclusively defeat the Szerns, he is the hero of the lengthy war but, for the first time in the Selenites' memory, there is no new threat and he is now expected to fulfill his role as the Messiah. Having originally flown away to the Moon in the aftermath of an unhappy love affair, and having undergone another tragic romance with a Selenite woman, Marek is exhausted, both emotionally and psychologically.

Marek hears word of the discontent in the Selenite homeland and returns there alone, leaving his second-in-command in charge of the troops. When Marek reaches the Selenite homeland, he finds the population in open revolt at his attempted reforms, spurred on by the manipulative Sewin. Marek is also accused of having made a compact with the Szerns, and he is disavowed by a leading religious order who deny the Selenites' terrestrial origin and believe that they are native to the Moon. Facing overthrow, Marek decides to return to Earth in the ship, but finds it has gone. In the capital, he is forced to face the mounting wrath of the people. After all the sacrifices of the conflict, his hopes for a new society, based upon noble principles, are shattered by disunion in the ranks of the Selenites and their misplaced mystical faith in his status as the Savior. Unable to be the hoped-for Messiah in the crestfallen Selenites' ultimate desired destiny of Earth-quest, and failing to bring spiritual salvation, Marek achieves unintended messianic status when, in a fulfillment of Awij's dire predictions, he is sacrificed in a manner echoing the crucifixion of Jesus Christ.

Volume 3: Stara Ziemia (The Old Earth) [first edition—Warsaw, 1911]