A Deepness in the Sky

A Deepness in the Sky is a science fiction novel by American writer Vernor Vinge. Published in 1999, the novel is a loose prequel (set twenty thousand years earlier) to his earlier novel A Fire Upon the Deep (1992). The title is coined by one of the story's main characters in a debate, in a reference to the hibernating habits of his species and to the vastness of space.

A Deepness in the Sky
AuthorVernor Vinge
Cover artistBob Eggleton
CountryUnited States
SeriesZones of Thought universe
GenreHard science fiction
Published1999 (Tor Books)
Media typePrint (Hardback, Paperback)
Pages606 (Hardback), 775 (Paperback)
ISBN0-312-85683-0 (Hardback 1st edition), ISBN 0-8125-3635-5 (Paperback)
813/.54 21
LC ClassPS3572.I534 D44 1999
Preceded byA Fire Upon the Deep 
Followed byThe Children of the Sky 


The plot begins with the discovery of an intelligent alien species on a planet orbiting an anomalous star, dubbed OnOff because for 215 of every 250 years it is dormant, releasing almost no energy. During this period, the planet freezes and its fauna go into hibernation. The planet's inhabitants, called "Spiders" by the humans for their resemblance to arachnids, have reached a stage of technological development very similar to that of Earth's humans in the early 20th century, although humans believe that they may once have been capable of space travel. If this is true, then whoever can establish ties with the aliens first could reap unimaginable rewards; humans have made contact with only one other intelligent (but non-technological) alien species in millennia of travel through the stars. Two human groups launch expeditions to the Spider world: the Qeng Ho (pronounced Chung Ho and named after the explorer Zheng He), traders who have developed a common interstellar culture for humanity; and the Emergents, a civilization that literally enslaves selected human minds and has only recently re-emerged from a Dark Age.

Plot summary

The Qeng Ho arrive at the OnOff star shortly before the Emergent fleet, a few years before the sun turns on, at which point the Spider civilization will "wake up" and continue its climb into a technological civilization. A reception held by the Emergents doubles as a vector to infect the Qeng Ho with a timed "mindrot" virus. The Emergents time an ambush to take advantage of the onset of symptoms.

During these events, a concurrent history of the Spider civilization unfolds – mainly through the picaresque, and then increasingly political and technocratic, experiences of a small group of liberal-minded and progressive Spiders. Their struggles against ignorance and obsolescent traditions are coloured with oddly human-like descriptions and nomenclature, prefiguring some major plot revelations towards the end of the story.

Far above, after a close fight, the Emergents subjugate the Qeng Ho; but losses to both sides force them to combine and adopt the so-called "Lurker strategy", monitoring and aiding the Spiders' technological development, waiting until they build up the massive infrastructure and technological base that the visitors need in order to repair their vessels.

The mindrot virus originally manifested itself on the Emergents' home world as a devastating plague, but they subsequently mastered it and learned to use it both as a weapon and as a tool for mental domination. Emergent culture uses mindrot primarily in the form of a variant which technicians can manipulate in order to release neurotoxins to specific parts of the brain. An active MRI-type device triggers changes through dia- and paramagnetic biological molecules. By manipulating the brain in this way, Emergent managers induce obsession with a single idea or specialty, which they call Focus, essentially turning people into brilliant appliances. Many Qeng Ho become Focused against their will, and the Emergents retain the rest of the population under mass surveillance, with only a portion of the crew not in suspended animation. The Qeng Ho trading culture gradually starts to dilute this, by demonstrating to the Emergents certain benefits of tolerated and restricted free trade; the two human cultures merge to some extent over the decades of forced co-operation.

Pham Nuwen, the founder of the Qeng Ho trading culture, is living aboard the fleet under the pseudonym Pham Trinli, posing as an inept and bumbling fleet elder. He subverts the Emergents' own oppressive security systems through a series of high-risk ruses. During his plotting he begins to admire the Emergents' Focus technology, seeing it as the missing link in his lifelong goal to create a true interstellar empire and break the cycle of collapse-and-rebuild that plagues human planetary civilizations.

The plan to wrest fleet control from the Emergents, however, requires the co-operation of Ezr Vinh, a much younger Qeng Ho who, through attrition, has become the Qeng Ho "Fleet Manager". Ezr's position as the unique liaison officer between Qeng Ho and Emergents leads him to despair, and he accepts Pham Nuwen's offer to join a plot against the Emergents as a way to personal redemption as well as to take revenge against the Emergents. However, his understanding of Pham's ambitions for Focus technology leads to a confrontation between them over the future use of Focus by the Qeng Ho. With new knowledge of the effects and victims of Focus, Pham is forced to admit the cost is too high, and the two reach an agreement and continue their plotting.

The critical moment comes when the Emergents attempt to provoke a nuclear war on the Spider home-world in order to seize power. The conspirators subvert the Emergents' systems and put their plans in action, but so do a small group of Spiders who have become aware of the humans and have been working in secret for years to subvert their Focused as well. Together, the two sides successfully defeat the ruling class of the Emergents.

The combined Emergent/Qeng Ho fleet now negotiates with the Spider civilization as a trading partner. Pham announces his plans to free all of the Focused in the entire Emergent civilization, and, if he survives that, to go to the Galactic Center to find the source of the OnOff star and the strange technology remnants that have clearly traveled with it.


Interstellar culture

The book discusses some of the problems of trying to maintain an interstellar trading culture without access to superluminal travel or to superluminal communication. Time-measurement details provide an interesting concept in the book: the Qeng Ho measure time primarily in terms of seconds, since the notion of days, months, and years has no usefulness between various star-systems. The timekeeping system uses terms such as kiloseconds and megaseconds. The Qeng Ho's computer and timekeeping systems feature the advent of "programmer archaeologists":[1] the Qeng Ho are packrats of computer programs and systems, retaining them over millennia, even as far back to the era of Unix programs (as implied by one passage mentioning that the fundamental time-keeping system is the Unix epoch:

Take the Traders' method of timekeeping. The frame corrections were incredibly complex - and down at the very bottom of it was a little program that ran a counter. Second by second, the Qeng Ho counted from the instant that a human had first set foot on Old Earth's moon. But if you looked at it still more closely ... the starting instant was actually about fifteen million seconds later, the 0-second of one of Humankind's first computer operating systems.

This massive accumulation of data implies that almost any useful program one could want already exists in the Qeng Ho fleet library, hence the need for computer archaeologists to dig up needed programs, work around their peculiarities and bugs, and assemble them into useful constructs.


With this work, Vinge introduces "localizers" to his set of science-fiction concepts. Localizers are tiny devices which can contain a simple processor, sensors, and short-range communications. Vinge explores how intelligent control can use mesh networking of these devices in ways quite different from those of traditional computer networks.

Relation to A Fire Upon the Deep

Only one concrete connection links A Deepness in the Sky with A Fire Upon the Deep: the character of Pham Nuwen, the "Programmer-at-Arms", who appears in both books. Hints occur about the "Zones of Thought" mentioned in Fire. That novel posits that space around the Milky Way is divided into concentric layers called "Zones", each being constrained by different laws of physics and each allowing for different degrees of biological and technological advancement. The innermost, the "Unthinking Depths", surrounds the galactic core and is incapable of supporting advanced life forms at all. The next layer, the "Slow Zone", is roughly equivalent to the real world in behavior and potential. Further out, the zone named the "Beyond" can support futuristic technologies such as AI and FTL travel. The outermost zone, the "Transcend", contains most of the galactic halo and is populated by incomprehensibly vast and powerful posthuman entities.

A Deepness in the Sky takes place in the Slow Zone, though Vinge does not explain the connections, and the characters in the story remain unaware of the zones' existence. The sun's inexplicably strange behavior, the unusual planetary system (with only a solitary planet and several asteroid-sized diamonds), and the discovery of "cavorite" on the planet may indicate the system originated in the Transcend, though it is currently moving outward from the Unthinking Depths. Vinge's characters speculate that the Spiders descend from an ancient star-faring civilization, and that the anti-gravity material and other strange artifacts have connections with that civilization. Unfortunately, they guess the structure of the Zones (though not the actual properties) backwards, coming to the conclusion that the bright center of the galaxy is the most likely location for advanced civilization. This leads Pham on his path inwards to the Unthinking Depths, and his eventual resurrection.

Relation to The Outcasts of Heaven Belt

Joan D. Vinge has indicated that her novel The Outcasts of Heaven Belt is also set in the Slow Zone of the Zones of Thought setting.[2] Both novels show their spacefaring civilizations using seconds, kiloseconds, megaseconds, and gigaseconds as their primary units of time.


Deepness won the 2000 Hugo Award for Best Novel,[3] the 2000 John W. Campbell Memorial Award,[3] the 2000 Prometheus Award[4] and the 2004 Kurd-Laßwitz-Preis for Best Foreign Fiction;[5] as well, it was nominated for the Nebula Award for Best Novel,[6] the 2000 Arthur C. Clarke Award,[3] and the 2000 Locus Award for Best Science Fiction Novel[3]

Nick Gevers called Deepness "one of the best constructed and most absorbing space operas of the decade", and commented that its "shrewd triumph" is that neither optimism nor pessimism defeats the other.[7] John Clute lauded it as "the most extended example of dramatic irony ever published," in that not only do none of the characters ever learn the truth about the universe, neither does anyone who has not read Fire; he did, however, criticize "the odd dozen-page segments given over to hard-SF geekishness about orbits and computers and stuff".[8]

The SF Site's Greg L. Johnson considered the novel to be "deceptively straight-forward",[9] and at Strange Horizons, Amy Harlib praised it as "huge, complex and captivating" and "rich and satisfying and deserving of its award", emphasizing that it is the equal of its predecessor work.[10] Kirkus Reviews described it as a "chilling, spellbinding dramatization of the horrors of slavery and mind control",[11] while Publishers Weekly noted that it would "fully engage" readers' sense of wonder, and correctly predicted that it would be nominated for the Hugo Award.[12]


  1. ^ "No More Coding From Scratch?". Slashdot. November 4, 2006.
  2. ^ Vinge, Joan D. (2008-11). "A letter to my readers."
  3. ^ a b c d "2000 Award Winners & Nominees". Worlds Without End. Archived from the original on 6 October 2009. Retrieved 2009-09-26.
  4. ^ Awards, at the Libertarian Futurist Society; retrieved March 14, 2017
  5. ^ 2004, at Kurd-Lasswitz-Preis.de; retrieved March 14, 2017
  6. ^ "1999 Award Winners & Nominees". Worlds Without End. Retrieved 2009-09-26.
  7. ^ A Deepness in the Sky by Vernor Vinge, reviewed by Nick Gevers, at InfinityPlus.co.uk; published September 18, 1999; retrieved March 14, 2017
  8. ^ Excess of Candour: We are breathing in the dark, by John Clute, at Scifi.com, via archive.org; published no later than April 24, 2000 (date of earliest version on archive.org); retrieved March 14, 2017
  9. ^ A Deepness in the Sky, reviewed by Greg L. Johnson; published 1999; retrieved March 14, 2017
  10. ^ Vernor Vinge's A Fire Upon the Deep and A Deepness in the Sky, at Strange Horizons, by Amy Harlib; published July 9, 2001; retrieved March 14, 2017
  11. ^ A DEEPNESS IN THE SKY, by Vernor Vinge, at Kirkus Reviews; published February 1, 1999; archived online May 20, 2010; retrieved March 14, 2017
  12. ^ DEEPNESS IN THE SKY / Vernor Vinge, author, reviewed at Publishers Weekly; published February 1, 1999; retrieved March 14, 2017

Release details

  • 1999, United States of America, Tor Books, ISBN 0-312-85683-0, Pub date March 1999, Hardback
  • 2000, United States of America, Tor Books, ISBN 0-8125-3635-5, Pub date January 2000, Paperback

External links

1999 in literature

This article presents lists of the literary events and publications in 1999.

2000 in literature

This article presents lists of the literary events and publications in 2000.

58th World Science Fiction Convention

The 58th World Science Fiction Convention (Worldcon) was Chicon 2000, which was held in Chicago, United States from August 31 through September 4, 2000. The venues for 58th Worldcon were Hyatt Regency Chicago, Sofitel Hotel and Fairmont Hotel. The organizing committee was chaired by Tom Veal.The convention had 6,574 members, of whom 5,794 actually attended the convention.

A Fire Upon the Deep

A Fire Upon the Deep is a 1992 science fiction novel by American writer Vernor Vinge, a space opera involving superhuman intelligences, aliens, variable physics, space battles, love, betrayal, genocide, and a conversation medium resembling Usenet. A Fire Upon the Deep won the Hugo Award in 1993, sharing it with Doomsday Book by Connie Willis.Besides the normal print book editions, the novel was also included on a CD-ROM sold by ClariNet Communications along with the other nominees for the 1993 Hugo awards. The CD-ROM edition included numerous annotations by Vinge on his thoughts and intentions about different parts of the book, and was later released as a standalone e-book (no longer available).

Double Star

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Invisible hand is a term used by Adam Smith to describe the basis of the self-regulating nature of the marketplace.

Invisible hand may also refer to:

The Invisible Hand (play), a 2012 play by Ayad Akhtar

"The Invisible Hand" (The Spectacular Spider-Man), an episode of The Spectacular Spider-Man TV series in 2008

Invisible Hand, a starship in Vernor Vinge's 1999 novel A Deepness in the Sky

Invisible Hand, the flagship of General Grievous in the 2005 Star Wars movie Revenge of the Sith

Kurd Laßwitz Award

The Kurd Laßwitz Award (German: Kurd-Laßwitz-Preis) is possibly the best-known science fiction award from Germany. The award is named after the science fiction author Kurd Laßwitz. Eligible for nomination in all categories except for the Foreign Work category are only works published in German originally.Wolfgang Jeschke has won the award 19 times in four different categories, while Andreas Eschbach has won the prize 9 times in two different categories. The foreign-language category includes novels, stories, collections and non-fiction. Iain Banks and China Miéville won the foreign-language prize four times. Other authors to win multiple times are Hans Joachim Alpers, Carl Amery, Herbert W. Franke, Ian McDonald, Michael Marrak, and Connie Willis.

Paladin of Souls

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Ruritania is a fictional country. Its name is usually invoked as a placeholder name to make points in academic discussions, much as Alice and Bob are in logic and computing. The origin of the name lies in novels by Anthony Hope, who developed a fictional country of central Europe as a setting.

Software archaeology

Software archaeology or software archeology is the study of poorly documented or undocumented legacy software implementations, as part of software maintenance. Software archaeology, named by analogy with archaeology, includes the reverse engineering of software modules, and the application of a variety of tools and processes for extracting and understanding program structure and recovering design information. Software archaeology may reveal dysfunctional team processes which have produced poorly designed or even unused software modules. The term has been in use for decades, and reflects a fairly natural metaphor: a programmer reading legacy code may feel that he or she is in the same situation as an archaeologist exploring the rubble of an ancient civilization.

The Beyond

The Beyond may refer to:

The Beyond (film), a 1981 Italian horror film

The Beyond (band), a UK progressive metal band

The Beyond (album), an album by Cult of Luna

A fictional region of space in the Demon Princes novels by Jack Vance

A fictional "Zone of Thought" in the novel A Fire Upon the Deep by Vernor Vinge, and its prequel, A Deepness in the Sky

The Children of the Sky

The Children of the Sky is a science fiction novel by American writer Vernor Vinge. It is a direct sequel to A Fire Upon the Deep and shares the Zones of Thought universe with A Deepness in the Sky. Unlike A Fire Upon the Deep, the novel is set completely on the Tines' world. It was nominated for the 2012 Locus Award for Best Science Fiction Novel and the Prometheus Award.

The Sword in the Stone (novel)

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Vernor Vinge

Vernor Steffen Vinge ( (listen); born October 2, 1944) is an American science fiction author and retired professor. He taught mathematics and computer science at San Diego State University. He is the originator of the technological singularity concept and perhaps the first to present a fictional "cyberspace". He has won the Hugo Award for his novels and novellas A Fire Upon the Deep (1992), A Deepness in the Sky (1999), Rainbows End (2006), Fast Times at Fairmont High (2002), and The Cookie Monster (2004).


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