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First contact is a common science fiction theme about the first meeting between humans and extraterrestrial life, or of any sentient race's first encounter with another one.
The theme allows authors to explore such topics such as xenophobia, transcendentalism, and basic linguistics by adapting the anthropological topic of first contact to extraterrestrial cultures. Though beyond the scope of this article, the concept of 'first contact' extends into philosophical realms, particularly when discussing how the human race would react to such events.
Murray Leinster's 1945 novelette "First Contact" established the term "first contact" in science fiction, although the theme had previously appeared in e.g. H. G. Wells' The Time Machine (1895), The War of the Worlds (1898) and The First Men in the Moon (1901).
There have been entire series devoted to this theme. One classic series is the "interstellar trader" series by Andre Norton. More modern treatments, using radio rather than spaceships, include The Hercules Text by Jack McDevitt, A for Andromeda by Fred Hoyle, Life on Another Planet by Will Eisner, and Contact by Carl Sagan. Larry Niven and Jerry Pournelle's The Mote in God's Eye was written to be, in Niven's words, "the epitome of first contact novels.". Here it is humanity that plays the role of visiting aliens, as the religious, technological, political, psychological, military, cultural, and biological implications of first contact are explored.
The Star Trek television series explored the theme in depth, and introduced the concept of the Prime Directive: a law forbidding first contact (or covert interference) by the peoples of the Federation (humanity and its allies) with any races not sufficiently advanced for such an encounter (i.e. capable of interstellar travel). There is also the movie, Star Trek: First Contact, which depicts the human race's first contact with an alien culture, the Vulcan race. The anniversary of the day is celebrated and called "First Contact Day". A Next Generation episode, also named "First Contact", explored the scenario from the other end of the spectrum - after Commander Riker is injured, and his true nature discovered, while secretly observing a race on the cusp of warp capability, the Enterprise crew must walk a tightrope revealing themselves to the certain high-ranking officials from that planet while hiding their existence from the general population.
By contrast, in the works of Iain M. Banks, the Contact division of the galactic civilization calling itself the Culture (which features in the majority of Banks' science fiction) frequently manipulates less advanced civilizations, steering them towards peaceful progress, especially those that may become aggressive or dangerous, under the pretext of maintaining the balance of galactic power; a notable exception being the short story The State of the Art, in which the Culture decides not to contact Earth so they can use it as a control to measure their manipulations of other societies against. Novels such as The Player of Games and Look to Windward delve into the psychology of first inter-species contact in considerable depth. In the novel Excession, Banks coins the phrase Outside Context Problem in relation to first contact.
The novel The Gods Themselves by Isaac Asimov explores simultaneously the potential unity of all races, and the possibility of conflict inherent in all first contacts: even as members of different races understand each other, their disparate ways may endanger both their worlds, even the fabric of their respective universes. This gap between individuals and their respective societies is characteristic of the First Contact plot of E.T. Other explorations of the theme in popular culture include encounters with predatory or semi-sentient races as in Alien and Independence Day.
Examples of the mutual inscrutability and the potentially unbridgeable gaps between races which—by their very natures—are just too different to bond or even to accept each other, include Stephen Baxter's Xeelee Sequence concept of the dark matter photino birds, the god-like Firstborn from Arthur C. Clarke's Time Odyssey series, and Stanisław Lem's planet Solaris and the events of the novel Fiasco. In other cases, such as Greg Bear's The Forge of God and Anvil of Stars, or Bruce Sterling's Schismatrix, aliens are presented as falling into a highly diverse spectrum, some easily relating with humans, others too alien for meaningful communication.
Peter Watts's Hugo-nominated Blindsight (2006) is one of the latest works to explore the theme of first contact.
A major theme of a number of works of Stanislaw Lem, most famous being Solaris, is the inherent impossibility of meaningful contact with alien races.
The theme of first contact, ranging from friendly collaboration to menace or conflict, has been visualized a number of films and television series. Amongst the more famous are Steven Spielberg's film Close Encounters of the Third Kind and the television series V.
The A.R. Curtis short story Best discusses the subject in some detail, as local civilians and police fight off the military and the aliens in an attempt to prevent nuclear sanitization.
In the Halo expanded universe novel Halo: Contact Harvest, humanity's first contact with aliens is on a human agricultural colony, where an initially peaceful meeting (although preceeded by aliens walking into an anti-insurgent trap set up human military) with an alien alliance known as the Covenant turns violent, eventually resulting in a 27 year war. The backstory of Mass Effect features the First Contact War, caused by an alien military patrol observing a human ship, which was unknowingly breaching galaxy-wide conventions, attacking it and occupying a seemingly poorly-defended colony, only to learn of humanity's military prowess in a swift counterattack. The conflict was quickly smothered by the galactic comminuty, but the reputation and bitterness persist until the events of the games.