Gravity's Rainbow is a 1973 postmodern novel by Thomas Pynchon. The narrative is set primarily in Europe at the end of World War II and centers on the design, production and dispatch of V-2 rockets by the German military. In particular, it features the quest undertaken by several characters to uncover the secret of a mysterious device, the ('black device'), which is slated to be installed in a rocket with the serial number "00000".

Gravity's Rainbow shared the 1974 US National Book Award for Fiction with A Crown of Feathers and Other Stories by Isaac Bashevis Singer. Although selected by the Pulitzer Prize jury on fiction for the 1974 Pulitzer Prize for Fiction, the Pulitzer Advisory Board was offended by its content, some of which was described as 'unreadable', 'turgid', 'overwritten', and in parts 'obscene'. No Pulitzer Prize was awarded for fiction that year. The novel was nominated for the 1973 Nebula Award for Best Novel.

Time named Gravity's Rainbow one of its "All-Time 100 Greatest Novels", a list of the best English-language novels from 1923 to 2005 and it is considered by many critics to be one of the greatest American novels ever written.Almansi, p. 226: "piu importante romanzo americano del secondo dopoguerra, Gravity's Rainbow di Thomas Pynchon (romanzo mai pubblicato in Italia, con grande vergogna dell'editoria nazionale)." English translation: "most important American novel of the second post-war, Gravity's Rainbow by Thomas Pynchon (a novel never published in Italy, to the great shame of the national publishing industry)". Almansi's comment is from 1994. Gravity's Rainbow was translated and published in Italy in 1999. It is considered an encyclopedic novel and was among the works featured in Edward Mendelson's essay Encyclopedic Narrative: From Dante to Pynchon, which coined the term.

Structure and chronology Dedication Gravity's Rainbow carries the dedication "For Richard Fariña". Pynchon had been a good friend of Fariña, a folk singer and novelist, since they had attended Cornell University together. Fariña had died in a motorcycle accident in 1966. The layout Gravity's Rainbow is composed of four parts, each segmented into a number of episodes. In the original editions of the book, the episodes were separated by a row of seven small squares. Many readers, reviewers, and scholars, such as Richard Poirier, have suggested that the squares resemble the film perforations known as "sprocket holes" that engage with the teeth in a film camera or projector to advance the strip of film. The squares, however, were inserted by Edwin Kennebeck, an editor at the book's original publisher, Viking Press. Kennebeck denied that the layout was intentional, and later editions of the novel separate the segments with only one square.

Part 1: Beyond the Zero (21 episodes) The name "Beyond the Zero" refers to lack of total extinction of a conditioned stimulus. The events of this part occur primarily during the Christmas Advent season of 1944 from December 18–26, coinciding in part with the Battle of the Bulge. The epigraph is a quotation from a pamphlet written by the rocket scientist Wernher von Braun and first published in 1962: "Nature does not know extinction; all it knows is transformation. Everything science has taught me, and continues to teach me, strengthens my belief in the continuity of our spiritual existence after death."Von Braun, Wernher, , in William Nichols (ed.), The Third Book of Words to Live By, Simon and Schuster, 1962, pp. 119–120. The epigraph reflects themes of anticipated redemption and blurring of the sacred and secular, both of which pervade Part 1. The epigraph is also potentially ironic, given von Braun's central role in the development of Nazi Germany's V-2 rocket.

Part 2: Un Perm' au Casino Hermann Goering (8 episodes) "" is French for "A Furlough at the Hermann Göring Casino". The events of this section span the five months from Christmas 1944 through to Whitsunday the following year, May 20, 1945. The misrepresentation or reinterpretation of identity is reflected in Slothrop's journey as well as the epigraph, attributed to Merian C. Cooper, speaking to Fay Wray prior to her starring role in King Kong, as recounted by Wray in the September 21, 1969, issue of The New York Times: "You will have the tallest, darkest leading man in Hollywood."Weisenburger, "Part 2: Un Perm au Casino Hermann Goering", p. 105: "The epigraph derives from a New York Times feature of September 21, 1969, entitled 'How Fay Met Kong...'"

Part 3: In the Zone (32 episodes) Part 3 is set during the summer of 1945 with analepses (literary flashbacks) to the time period of Part 2 with most events taking place between May 18 and August 6; the day of the atomic bomb attack on Hiroshima and also the Feast of the Transfiguration. The epigraph is taken from The Wizard of Oz, spoken by Dorothy as she arrives in Oz and shows her disorientation with the new environment: "Toto, I have a feeling we're not in Kansas any more...".

Part 4: The Counterforce (12 episodes) Part 4 begins shortly after August 6, 1945, and covers the period up to September 14 of that same year; the day of the Exaltation of the Holy Cross, with extended analepses to Easter/April Fool's weekend of 1945 and culminating in a prolepsis to 1970. The simple epigraphical quotation, "What?" is attributed to Richard M. Nixon, and was added after the galleys of the novel had been printed to insinuate the President's involvement in the unfolding Watergate scandal.Pynchon Notes 11; , February 1983, p. 64. The original quotation for this section (in the advance reading copies of the book) was an excerpt from the lyrics to the Joni Mitchell song "Cactus Tree" ("She has brought them to her senses/They have laughed inside her laughter/Now she rallies her defenses/For she fears that one will ask her/For eternity/And she's so busy being free").

Plot

Part 1: "Beyond the Zero"

The opening pages of the novel follow Pirate Prentice, an employee of the Special Operations Executive (S.O.E.), first in his dreams, and later around the house in wartime London that he shares with several others in the S.O.E. He soon is driven to the site of a V-2 rocket strike. Pirate's associate Teddy Bloat photographs a map depicting the sexual encounters of U.S. Army Lt. Tyrone Slothrop, an employee of a fictional technical intelligence unit, ACHTUNG. Slothrop and his background are detailed through discussions by some of his co-workers and through references to his family's history, reaching back to early colonial times, in the Berkshire Mountains of western Massachusetts. (There are loose parallels to Pynchon's own family history.) Slothrop's (fictional) home town of Mingeborough is mentioned for the first time (although the town and a young boy named Hogan Slothrop had previously been featured in Pynchon's short story, "The Secret Integration"). That family setting will be mentioned several times much later in the novel, following the family's decline over time within a Puritan legacy of sterility and death.

Employees of a fictional top secret psychological warfare agency called PISCES, headquartered at a former insane asylum known as "The White Visitation", investigate Slothrop's map of his presumed sexual encounters in London, finding that each location appears to precede a V-2 rocket strike in the same place by several days. This coincidence intrigues Pavlovian behavioral psychologist Edward W. Pointsman, who thinks there may be a direct causal relationship between Slothrop's erections and the missile strikes, and his associate, statistician Roger Mexico, who suggests that the relationship is only a random coincidence of probabilities, as seen in Poisson distributions, leading to further reflections in this section and later on topics as broad as the occult, Determinism, the reverse flow of time, and the sexuality of the rocket itself. Pointsman is all the more intrigued to find that as a baby, Slothrop had been subjected to behavioral experiments conducted by a Dr. Laszlo Jamf that involved the stimulation of his penis to erections.

Many characters not significant until later are introduced in "Beyond the Zero", including one of Dr. Jamf's former students, Franz Pökler, a German engineer who has worked on early German experiments in rocketry and later on the V-2 rocket, and Pökler's wife Leni, a former student radical. Others who appear significant in Part One, such as Pointsman's associate Thomas Gwenhidwy and Roger Mexico's girlfriend Jessica Swanlake, vanish from the narrative and don't re-appear until much later. Indeed, most of the 400 named characters make only single appearances, serving merely to demonstrate the sheer scope of Pynchon's universe. Character names sometimes consist of outrageous puns (such as "Joaquin Stick") but may also relate to particular traits of that character or to themes within the novel. Some names of historical characters also have thematic relevance. Under the influence of sodium amytal administered through Pointsman's maneuvers, Slothrop has a hallucinatory flashback to a scene in Boston's Roxbury district. References here include "Red, the Negro shoeshine boy", who will much later be known as the Black Power leader Malcolm X, and jazz saxophonist Charlie "Yardbird" Parker, both of whom represent a threat to white racism. Another fictional character, Katje Borgesius, is contacted in this section by Pirate in order to bring her to safety from the Continent to England. Katje had been a Dutch double agent who infiltrated a V-2 rocket-launching battery commanded by a sadistic SS officer named Captain Blicero. Blicero had kept Katje and a young soldier named Gottfried as sex slaves in a perverse enactment of the Hansel and Gretel story. However, Blicero (a Teutonic name connoting Death) is also revealed to be the code name of a former Lieutenant Weissman ("White Man") who earlier appeared in Pynchon's first novel, V. He has had an ongoing but now-severed relationship with Enzian, a Herero he had brought to Germany from German South West Africa (now Namibia), and who is the leader of a group of Herero rocket technicians known as the Schwarzkommando, who had been helping Blicero in his own project to create and fire a rocket. Katje, on the other hand, will come under Pointsman's control in England, while, as the Christmas season ends, Roger Mexico worries about losing Jessica Swanlake to her other, bureaucratic and sedate, boyfriend, Jeremy (also referred to as "Beaver" because of his beard).

Part 2: "Un Perm' au Casino Hermann Goering" Slothrop is sent away by his superiors under mysterious circumstances to a casino on the recently liberated French Riviera, in which almost the entirety of Part Two takes place. He is in fact being monitored by associates of Pointsman, including Katje and a linguist named Sir Stephen Dodson-Truck. One of the more bizarre Pavlovian episodes involves the conditioning of trained octopus Grigori to attack Katje. Early in part two, the octopus attacks Katje on the beach in France, and Slothrop is "conveniently" at hand to rescue her. Katje and Slothrop eventually have sex. At the Casino, he learns of a rocket with the irregular serial number 00000 (Slothrop comments that the numbering system doesn't allow for four zeroes in one serial, let alone five), which features a mysterious component called the S-Gerät (short for Schwarzgerät, 'black device'), made out of the hitherto unknown plastic Imipolex G. It is hinted that Slothrop's prescience of rocket hits is due to being conditioned as an infant by the creator of Imipolex G, Laszlo Jamf. Later, the reality of this story is called into question, as is the very existence of Slothrop's original sexual exploits.