Thrice Upon A Time
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''Thrice Upon A Time'' is a
science fiction Science fiction (sometimes shortened to Sci-Fi or SF) is a genre of speculative fiction which typically deals with imaginative and futuristic concepts such as advanced science and technology, space exploration, time travel, parallel unive ...
novel A novel is a relatively long work of narrative fiction, typically written in prose and published as a book. The present English word for a long work of prose fiction derives from the for "new", "news", or "short story of something new", itsel ...
by British writer James P. Hogan, first published in 1980. Unlike most other
time travel Time travel is the concept of movement between certain points in time, analogous to movement between different points in space by an object or a person, typically with the use of a hypothetical device known as a time machine. Time travel is a w ...
stories, ''Thrice Upon A Time'' considers the ramifications of sending messages into the past and/or receiving messages from the future, rather than the sending of physical objects through time.


Plot summary

In December 2009, Murdoch Ross and his friend Lee Francis Walker visit Murdoch's grandfather, Sir Charles Ross, in his castle in Storbannon, Scotland. Sir Charles is a
Nobel Prize The Nobel Prizes ( ; sv, Nobelpriset ; no, Nobelprisen ) are five separate prizes that, according to Alfred Nobel's will of 1895, are awarded to "those who, during the preceding year, have conferred the greatest benefit to humankind." Alfr ...
winner for his work in
particle physics Particle physics or high energy physics is the study of fundamental particles and forces that constitute matter and radiation. The fundamental particles in the universe are classified in the Standard Model as fermions (matter particles) an ...
— more specifically the isolation of
free quark A quark () is a type of elementary particle and a fundamental constituent of matter. Quarks combine to form composite particles called hadrons, the most stable of which are protons and neutrons, the components of atomic nuclei. All commonly o ...
s. In this novel, when a
nucleon In physics and chemistry, a nucleon is either a proton or a neutron, considered in its role as a component of an atomic nucleus. The number of nucleons in a nucleus defines the atom's mass number (nucleon number). Until the 1960s, nucleons were ...
decays into three quarks, the first two quarks appear immediately and the third quark appears on the order of a few millionths of an "yoctosecond" later. A widely accepted theory is that the original decay produces two quarks and also a third unknown particle, dubbed the "quason". This is subsequently transformed into a third quark. Sir Charles offers a different and radical explanation: all three of the quarks are created at once, but the first two are "propagated back in time". Charles dubs the energy which had allowed the propagation through time as "tau waves". Although his theory is seemingly valid and consistent, the
physicist A physicist is a scientist who specializes in the field of physics, which encompasses the interactions of matter and energy at all length and time scales in the physical universe. Physicists generally are interested in the root or ultimate caus ...
s of his time refuse to accept it because of its implications — namely the failure of some of the physical laws of conservation. Sir Charles then retreats to his family's castle in Scotland to continue his research in private. There, he succeeds in building a time machine capable of sending messages to the future and the past. When the two young men arrive, Sir Charles takes them down into the basement, where the machine is found. As they enter the basement, a computer attached to the machine produces data on a sheet of paper, which Sir Charles hides from the other men. He asks Murdoch to type in a six-character random message into the computer. Sir Charles next activates his machine and transmits the message one minute back in time. Finally, he shows the paper printed out previously, and Murdoch and Lee are amazed: the printout contained exactly the same random characters that Murdoch typed, and these were printed ''before Murdoch had typed them in''. After Murdoch and Lee have gotten over their initial amazement, they decide to experiment with the machine. Murdoch tries to fool the machine into creating a
causality paradox Time travel is a common theme in fiction, mainly since the late 19th century, and has been depicted in a variety of media, such as literature, television, film, and advertisements. The concept of time travel by mechanical means was popularized ...
, by deliberately receiving a message from the future, and not sending the message back at the due time. Suddenly, the entire system turns bizarre, and they are flooded with messages from all over the ten-minute range of the machine. Then they abruptly turn off the machine and leave. While outside, Murdoch and Lee talk about the implications of the machine's existence and how the
space-time continuum In physics, spacetime is a mathematical model that combines the three dimensions of space and one dimension of time into a single four-dimensional manifold. Spacetime diagrams can be used to visualize relativistic effects, such as why differ ...
could allow for time travel without introducing a paradox. They formulate theories similar to the
many-worlds interpretation The many-worlds interpretation (MWI) is an interpretation of quantum mechanics that asserts that the universal wavefunction is objectively real, and that there is no wave function collapse. This implies that all possible outcomes of quantum me ...
, finally deciding that none of the theories they discuss fit their previous observations. The next day, Ted Cartland, a friend of Charles and a former
Royal Air Force The Royal Air Force (RAF) is the United Kingdom's air and space force. It was formed towards the end of the First World War on 1 April 1918, becoming the first independent air force in the world, by regrouping the Royal Flying Corps (RFC) and ...
officer, arrives to examine the machine he had helped build. They repeat the experiment, and Ted is bewildered as well. Ted, however, has a trick up his sleeve. He writes a
computer program A computer program is a sequence or set of instructions in a programming language for a computer to execute. Computer programs are one component of software, which also includes documentation and other intangible components. A computer program ...
to do what Murdoch had done the day before, to remove the human element from the experiment. The machine picks up an unexpected message, telling the experimenters that a glass jar had been broken. True enough, Lee was on the verge of accidentally pushing a jar off a shelf. However, they are unable to contact their future selves with the broken jar, since they apparently no longer exist. Sir Charles decides that upon sending the message back, the copies of themselves in the future had changed their past and thus had been ''erased'' from existence. The altered timeline, with its unbroken jar, overwrote the old one rather like recording over an old
TV program Television, sometimes shortened to TV, is a telecommunication Media (communication), medium for transmitting moving images and sound. The term can refer to a television set, or the medium of Transmission (telecommunications), television tra ...
on a
videotape Videotape is magnetic tape used for storing video and usually sound in addition. Information stored can be in the form of either an analog or digital signal. Videotape is used in both video tape recorders (VTRs) and, more commonly, videocassett ...
. Thus
causality Causality (also referred to as causation, or cause and effect) is influence by which one event, process, state, or object (''a'' ''cause'') contributes to the production of another event, process, state, or object (an ''effect'') where the cau ...
had been preserved. The fear of being erased chills them, and so they quickly disable the machine again. As time goes by, they establish an experimental
protocol Protocol may refer to: Sociology and politics * Protocol (politics), a formal agreement between nation states * Protocol (diplomacy), the etiquette of diplomacy and affairs of state * Etiquette, a code of personal behavior Science and technology ...
, and they set up automated tests to gain more information about the physics behind the machine. The machine is upgraded to allow for more data
throughput Network throughput (or just throughput, when in context) refers to the rate of message delivery over a communication channel, such as Ethernet or packet radio, in a communication network. The data that these messages contain may be delivered ov ...
and a time range of about 24 hours. Murdoch also meets a young woman named Anne Patterson when she trips over Sir Charles's kitten while she was out shopping in
Kingussie Kingussie ( ; gd, Ceann a' Ghiùthsaich ) is a small town in the Badenoch and Strathspey ward of the Highland council area of Scotland. Historically in Inverness-shire, it lies beside the A9 road, although the old route of the A9 serves as the ...
. They immediately fall in love. It turns out later that she is a
physicist A physicist is a scientist who specializes in the field of physics, which encompasses the interactions of matter and energy at all length and time scales in the physical universe. Physicists generally are interested in the root or ultimate caus ...
at the site of the new
fusion reactor Fusion power is a proposed form of power generation that would generate electricity by using heat from nuclear fusion reactions. In a fusion process, two lighter atomic nuclei combine to form a heavier nucleus, while releasing energy. Devices des ...
in
Burghead Burghead ( sco, Burgheid or ''The Broch'', gd, Am Broch) is a small town in Moray, Scotland, about north-west of Elgin. The town is mainly built on a peninsula that projects north-westward into the Moray Firth, surrounding it by water on thre ...
. Elizabeth Muir, another close friend of Sir Charles, works there as well, and he invites her to his castle to investigate the peculiar machine.


Burghead and black holes

The (fictional) European
Fusion Fusion, or synthesis, is the process of combining two or more distinct entities into a new whole. Fusion may also refer to: Science and technology Physics *Nuclear fusion, multiple atomic nuclei combining to form one or more different atomic nucl ...
Consortium (EFC) has commissioned a large
thermonuclear fusion Thermonuclear fusion is the process of atomic nuclei combining or “fusing” using high temperatures to drive them close enough together for this to become possible. There are two forms of thermonuclear fusion: ''uncontrolled'', in which the re ...
reactor in Burghead to compete with the technologies located in the United States and the
Soviet Union The Soviet Union,. officially the Union of Soviet Socialist Republics. (USSR),. was a transcontinental country that spanned much of Eurasia from 1922 to 1991. A flagship communist state, it was nominally a federal union of fifteen national ...
. The colossal energy obtained from fusion meant that huge amounts of power might someday be available at low costs. All three parties used inertial confinement technology, with the EFC opting to use
ion beam An ion beam is a type of charged particle beam consisting of ions. Ion beams have many uses in electronics manufacturing (principally ion implantation) and other industries. A variety of ion beam sources exists, some derived from the mercury ...
s. During this time, Murdoch and Lee get to tour the large Burghead facility through Elizabeth, who is a principal physicist there, and Murdoch builds a relationship with Anne. One day, while still in the testing phases of power production, the reactor is shut down when apparent erosion is detected in the fusion chamber. Two days before, the team at Storbannon had experienced an apparent failure in its time machine, with Lee asserting that the failure had to be due to interference. Their time machine then suddenly resumes operation again, and they elect to ignore the problem. Shortly after the incident, strange events start occurring around the world, with so-called ''bugophants'' (a blend of ''bug'' and ''elephant'') drilling tiny, long, straight holes through a myriad of objects, from human bodies to
telescope A telescope is a device used to observe distant objects by their emission, absorption, or reflection of electromagnetic radiation. Originally meaning only an optical instrument using lenses, curved mirrors, or a combination of both to observe ...
mirrors. Finally, the team finds out the cause of the erosion in the Burghead plant, the interference with the machine, and the bugophants themselves: the repeated fusion tests at the plant had, over the course of two days, produced some ''two million'' microscopic
black hole A black hole is a region of spacetime where gravitation, gravity is so strong that nothing, including light or other Electromagnetic radiation, electromagnetic waves, has enough energy to escape it. The theory of general relativity predicts t ...
s, which then tunnelled through the basement of the plant and concentrated around the
core of the Earth The internal structure of Earth is the solid portion of the Earth, excluding its atmosphere and hydrosphere. The structure consists of an outer silicate solid crust, a highly viscous asthenosphere and solid mantle, a liquid outer core whose ...
. As the black holes annihilated
matter In classical physics and general chemistry, matter is any substance that has mass and takes up space by having volume. All everyday objects that can be touched are ultimately composed of atoms, which are made up of interacting subatomic partic ...
, they emitted tau waves and caused interference even before the reactor tests. Although conventional theory stated that black holes could not form from the comparatively low pressure produced in the reactor, and small black holes could not survive long anyway, the conventional theory had failed to take into account the existence of tau waves and their effects. Lee suddenly goes into spasms and loses consciousness during a dinner with Murdoch and Anne. He is rushed to a local hospital, and then he is transferred to a special unit created to deal with a new outbreak, which had apparently affected him and several others in Burghead. While the rest of the team is away, Murdoch finds that the machine is about to be swamped with interference, and may soon be unusable. He decides to take matters into his own hands and transmit a message far back into the past to remedy the situation. To get around the 24-hour limit of the machine, he asks Anne, who had learned machine code programming at her
university A university () is an institution of higher (or tertiary) education and research which awards academic degrees in several academic disciplines. Universities typically offer both undergraduate and postgraduate programs. In the United States, t ...
, to write a program that would repeatedly bootstrap itself back in time until it reached the date desired. Anne complies, despite her deep misgivings. They manage to send the message, knowing they will be reset into the new timeline, and that anything could be different. Their selves in the past receive the message, and they act on it immediately. They have no choice but to tell the bewildered managing committee at Burghead of their findings, including revealing their time machine. Given the necessary investigations, the thermonuclear reactor is shut down indefinitely. And although neither Murdoch nor Anne is aware of it, the flood of tau particles accompanying the message upset delicate quantum probabilities. She did not trip over the kitten and then begin a relationship with Murdoch.


Centurion

In the new timeline, word of the time machine spreads to the EFC headquarters in Brussels and to other places. Lee turns ill in the castle one day and suddenly collapses. As a doctor, Anne contacts Murdoch, who is away, and suggests that Lee has succumbed to a new outbreak of a disease, apparently a version of
multiple sclerosis Multiple (cerebral) sclerosis (MS), also known as encephalomyelitis disseminata or disseminated sclerosis, is the most common demyelinating disease, in which the insulating covers of nerve cells in the brain and spinal cord are damaged. This d ...
, but progressing much faster, taking only a few weeks rather than years, and also very deadly. Murdoch pressures Anne to reveal more information about the outbreak, which appears to be highly classified. Anne does not know much, either. However, Murdoch finds out that a distinguished
medical specialist A medical specialty is a branch of medical practice that is focused on a defined group of patients, diseases, skills, or philosophy. Examples include those branches of medicine that deal exclusively with children (paediatrics), cancer (oncology), ...
, Sir Giles Fennimore, has arrived from
London London is the capital and largest city of England and the United Kingdom, with a population of just under 9 million. It stands on the River Thames in south-east England at the head of a estuary down to the North Sea, and has been a majo ...
to investigate the outbreak. He learns that the disease is somehow connected to the
West Coast of the United States The West Coast of the United States, also known as the Pacific Coast, Pacific states, and the western seaboard, is the coastline along which the Western United States meets the North Pacific Ocean. The term typically refers to the contiguous U.S ...
, where Lee had been residing in September 2009, and his suspicions are raised further. Ted and Elizabeth help Murdoch investigate. After interrogating Ralph Courtney, chairman at the Burghead facility, and a chance meeting by Ted with a young
R.A.F. The Royal Air Force (RAF) is the United Kingdom's air and space force. It was formed towards the end of the First World War on 1 April 1918, becoming the first independent air force in the world, by regrouping the Royal Flying Corps (RFC) and ...
pilot, they eventually find out (Ted knowing much of this from his previous R.A.F. experience) that
Anglo-American Anglo-Americans are people who are English-speaking inhabitants of Anglo-America. It typically refers to the nations and ethnic groups in the Americas that speak English as a native language, making up the majority of people in the world who spe ...
authorities had wished to establish an advanced laboratory for potentially dangerous research into
virus A virus is a submicroscopic infectious agent that replicates only inside the living cells of an organism. Viruses infect all life forms, from animals and plants to microorganisms, including bacteria and archaea. Since Dmitri Ivanovsky's 1 ...
es,
genetic manipulation Genetic engineering, also called genetic modification or genetic manipulation, is the modification and manipulation of an organism's genes using technology. It is a set of technologies used to change the genetic makeup of cells, including t ...
, and similar subjects. Naturally, this project stirred up a large controversy over public fears of containment failures and contamination and was eventually scrapped. However, the possible scientific advancements offered were simply too great to pass up. Thus a
satellite A satellite or artificial satellite is an object intentionally placed into orbit in outer space. Except for passive satellites, most satellites have an electricity generation system for equipment on board, such as solar panels or radioisotope ...
, the QX-37, was constructed and launched into
outer space Outer space, commonly shortened to space, is the expanse that exists beyond Earth and its atmosphere and between celestial bodies. Outer space is not completely empty—it is a near-perfect vacuum containing a low density of particles, pred ...
, purporting to be an
astronomical observatory An observatory is a location used for observing terrestrial, marine, or celestial events. Astronomy, climatology/meteorology, geophysical, oceanography and volcanology are examples of disciplines for which observatories have been constructed. His ...
. The QX-37 continued the experiments secretly. In August 2009, the satellite passed right through the path of the
Perseids The Perseids are a prolific meteor shower associated with the comet Swift–Tuttle. The meteors are called the Perseids because the point from which they appear to hail (called the radiant) lies in the constellation Perseus. Etymology The name ...
meteor shower A meteor shower is a celestial event in which a number of meteors are observed to radiate, or originate, from one point in the night sky. These meteors are caused by streams of cosmic debris called meteoroids entering Earth's atmosphere at extre ...
, and it was hit by a
meteor A meteoroid () is a small rocky or metallic body in outer space. Meteoroids are defined as objects significantly smaller than asteroids, ranging in size from grains to objects up to a meter wide. Objects smaller than this are classified as micr ...
. It broke up and disintegrated into the
Earth's atmosphere The atmosphere of Earth is the layer of gases, known collectively as air, retained by Earth's gravity that surrounds the planet and forms its planetary atmosphere. The atmosphere of Earth protects life on Earth by creating pressure allowing for ...
. After the breakup and fallout, to prevent public panic, the entire effort was tightly classified and codenamed ''Centurion''. Again, surpassing the odds, a single mutant strain of multiple sclerosis survives on its way back to the Earth, and infects the entire population of the West Coast, with an incubation period of nine months. It was during this time that Lee was infected, since he was on the West Coast at the time. The West Coast of the United States is one of the most densely populated areas on the planet, and soon thousands of people start reporting symptoms and being hospitalized. The new strain is named ''omnisclerosis Californians''. A
vaccine A vaccine is a biological Dosage form, preparation that provides active acquired immunity to a particular infectious disease, infectious or cancer, malignant disease. The safety and effectiveness of vaccines has been widely studied and verifie ...
is announced and vaccinations begin in
California California is a U.S. state, state in the Western United States, located along the West Coast of the United States, Pacific Coast. With nearly 39.2million residents across a total area of approximately , it is the List of states and territori ...
. However they are stopped after 811 of the people treated die from
neurological disorder A neurological disorder is any disorder of the nervous system. Structural, biochemical or electrical abnormalities in the brain, spinal cord or other nerves can result in a range of symptoms. Examples of symptoms include paralysis, muscle weakn ...
s triggered by one of the production batches, which had not been manufactured properly. Even though the vaccine worked, members of the public would not trust it anymore, and there are now left with no defense against the virus. The members of the team decide to contact Fennimore through the Minister of Advanced Technology and Science Graham Cuthrie. Although he is initially skeptical, he is convinced of the machine's authenticity after a demonstration. They propose a
pilot test A pilot study, pilot project, pilot test, or pilot experiment is a small-scale preliminary study conducted to evaluate Feasibility study, feasibility, Time, duration, cost, adverse events, and improve upon the study design prior to performance of a ...
: instead of changing many months of history, they offer to reset the events leading to the vaccine mishaps that had caused Fennimore much distress, five days ago. Cuthrie reluctantly agrees. He is asked to prepare a comprehensive document detailing the manufacturing problem, with additional measures taken to ensure its authenticity. In the new reset timeline, the faulty vaccine batch is retracted and the 811 deaths do not occur. Fennimore becomes a spokesman for the team, convincing world governments to take action. It is decided that the information needed to produce and distribute the vaccine will be sent back several months in time, as well as other current events, to help their past selves to make better decisions.


Epilogue

The message is sent to the afternoon of January 16, 2010, from July 28, 2010, shortly after the message about the black holes is received. The message is split up into two parts, a header announcing the message, and then the message body itself to arrive an hour later, to allow the team to attach more
computer memory In computing, memory is a device or system that is used to store information for immediate use in a computer or related computer hardware and digital electronic devices. The term ''memory'' is often synonymous with the term ''primary storage ...
to the machine for the message to be received completely. That very day, in this third iteration of the timeline, Murdoch and Lee go out shopping in Kingussie, and a certain young woman named Anne trips over Sir Charles's kitten... This is the origin of the story's title, ''Thrice Upon A Time''.


Themes

* Paradigm Paralysis. Some scientists have blind faith in current knowledge and are very hostile to what-if scenarios. The story in the book is an interesting parallel to the actual 2008 controversy surrounding the
Safety of particle collisions at the Large Hadron Collider The safety of high energy particle collisions was a topic of widespread discussion and topical interest during the time when the Relativistic Heavy Ion Collider (RHIC) and later the Large Hadron Collider (LHC)—currently the world's largest and ...
. *
Skepticism Skepticism, also spelled scepticism, is a questioning attitude or doubt toward knowledge claims that are seen as mere belief or dogma. For example, if a person is skeptical about claims made by their government about an ongoing war then the pe ...
. Nearly everyone outside Charles' immediate circle of acquaintances are initially skeptical of Charles' invention, despite being shown live demonstrations, with some going as far as to accuse him of
fraud In law, fraud is intentional deception to secure unfair or unlawful gain, or to deprive a victim of a legal right. Fraud can violate civil law (e.g., a fraud victim may sue the fraud perpetrator to avoid the fraud or recover monetary compens ...
, or compare him to
Uri Geller Uri Geller ( ; he, אורי גלר; born 20 December 1946) is an Israeli-British illusionist, magician, television personality, and self-proclaimed psychic. He is known for his trademark television performances of spoon bending and other ill ...
. *
Bureaucracy The term bureaucracy () refers to a body of non-elected governing officials as well as to an administrative policy-making group. Historically, a bureaucracy was a government administration managed by departments staffed with non-elected offi ...
. It is difficult for the team to contact any high-ranking
official An official is someone who holds an office (function or mandate, regardless whether it carries an actual working space with it) in an organization or government and participates in the exercise of authority, (either their own or that of their ...
s, even in dire situations. This is compounded by the fact that most of these officials are skeptical of the existence of a time machine, and do not want their time wasted. *
Politics Politics (from , ) is the set of activities that are associated with making decisions in groups, or other forms of power relations among individuals, such as the distribution of resources or status. The branch of social science that studies ...
. Politicians and governments are reluctant to trust each other and collaborate, even on extremely important matters. When the
Prime Minister A prime minister, premier or chief of cabinet is the head of the cabinet and the leader of the ministers in the executive branch of government, often in a parliamentary or semi-presidential system. Under those systems, a prime minister is not ...
hears of the machine, he immediately considers its
defense Defense or defence may refer to: Tactical, martial, and political acts or groups * Defense (military), forces primarily intended for warfare * Civil defense, the organizing of civilians to deal with emergencies or enemy attacks * Defense industr ...
implications, instead of its applications to world improvement. *
Secrecy Secrecy is the practice of hiding information from certain individuals or groups who do not have the "need to know", perhaps while sharing it with other individuals. That which is kept hidden is known as the secret. Secrecy is often controvers ...
and trust. The governments behind the ''Centurion'' project classify all information and tightly restrict its dissemination, even to people like Murdoch and Charles who might be able to offer help. The people do not trust authority either; a single defective batch of drugs is enough for people to avoid the life-saving ''omnisclerosis'' vaccine. * Love and destiny. No matter how significantly the timeline is reset, Murdoch invariably ends up meeting and falling in love with Anne. This implies that love transcends even
time Time is the continued sequence of existence and events that occurs in an apparently irreversible succession from the past, through the present, into the future. It is a component quantity of various measurements used to sequence events, to ...
, and that they are naturally destined for each other.


Reception

Greg Costikyan Greg Costikyan (born July 22, 1959, in New York City), sometimes known under the pseudonym "Designer X", is an American game designer and science fiction writer. Costikyan's career spans nearly all extant genres of gaming, including: hex-based wa ...
reviewed ''Thrice Upon a Time'' in '' Ares Magazine'' #3 and commented that "''Thrice Upon a Time'' for its faults is still a book rich in ideas."


Reviews

*Review by Bob Mecoy (1980) in ''
Future Life ''Future Life'', known as ''Future'' in its first year, was a science and science fiction magazine published from 1978 to 1981 by O'Quinn Studios. In the first year of its existence, the magazine was called "Future", then the name was expanded to ...
'', August 1980 *Review by Tom Easton (1980) in ''
Analog Science Fiction/Science Fact ''Analog Science Fiction and Fact'' is an American science fiction magazine published under various titles since 1930. Originally titled ''Astounding Stories of Super-Science'', the first issue was dated January 1930, published by William C ...
'', October 1980 *Review by Gene DeWeese (1980) in ''
Science Fiction Review Richard E. Geis (July 19, 1927 – February 4, 2013) was an American science fiction fan and writer, and erotica writer, from Portland, Oregon, who won the Hugo Award for Best Fan Writer in 1982 and 1983; and whose science fiction fanzine ...
'', Winter 1980


Real World

A paper was published in March 2011, which suggests a theory very similar to the one underlying the plot of this novel—and directly connected to the Large Hadron Collider, mentioned above—but using the Higgs singlet (a companion to the
Higgs boson The Higgs boson, sometimes called the Higgs particle, is an elementary particle in the Standard Model of particle physics produced by the quantum excitation of the Higgs field, one of the fields in particle physics theory. In the Stand ...
) to carry information back in time.


See also

* ''
Timescape ''Timescape'' is a 1980 science fiction novel by American writer Gregory Benford (with unbilled co-author Hilary Foister, Benford's sister-in-law, who is credited as having "contributed significantly to the manuscript"). It won the 1981 Nebula an ...
'', by Gregory Benford


References

{{reflist 1980 British novels 1980 science fiction novels British science fiction novels Novels about time travel Del Rey books Fiction set in 2009 Fiction set in 2010