Alien tripod war machines have appeared in several novels, movies, video games and television series.

Alien activity is discovered in a Kirkwood gap ; the aliens are identified as self-replicating machines ( von Neumann probes ).

This includes looking for living examples of animals that are considered extinct, such as dinosaurs ; animals whose existence lacks physical evidence but which appear in myths, legends, or are reported, such as Bigfoot and Chupacabra ; and wild animals dramatically outside their normal geographic ranges, such as phantom cats or " ABCs " ( an initialism commonly used by cryptozoologists that stands for Alien Big Cats ).

Alien warriors recruited by the god Klael in David Eddings ' " Tamuli " trilogy are noted by their human opponents to breathe marsh-gas ( methane ).

Alien languages are subject of both science fiction and scientific research.

Computer game Sid Meier's Alpha Centauri and its expansion Sid Meier's Alien Crossfire are set on the planet Chiron in the Alpha Centauri system where all indigenous life appears to behave in accordance with the Gaia philosophy.

Hints about this future war are dropped in several books earlier in the series beginning with Lawrence Miles's Alien Bodies and the war itself plays out as it would have originally done in Miles ' Faction Paradox series in which certain names are changed for copyright reasons ( the Time Lords become the Great Houses and Gallifrey becomes the Home World ).

Following his commercial breakthrough with Alien ( 1979 ), his best-known works are sci-fi classic Blade Runner ( 1982 ), Thelma & Louise ( 1991 ), best picture Oscar-winner Gladiator ( 2000 ), Black Hawk Down ( 2001 ), Matchstick Men ( 2003 ), Kingdom of Heaven ( 2005 ), American Gangster ( 2007 ), Robin Hood ( 2010 ), and Prometheus ( 2012 ).

* Alien priory cells are suppressed.

Phantom cats, also known as Alien Big Cats ( ABCs ), are large felines, such as jaguars or cougars, which have been purported to appear in regions outside their indigenous range.

* LV-426, or Acheron — The planet on which the derelict ship and its deadly cargo are found in the movies Alien and Aliens.

However, there are numerous well-known examples of science fiction horror films, epitomized by such pictures as Frankenstein and Alien.

" Future noir films often intermingle elements of the gothic thriller genre, such as Minority Report, which makes references to occult practices, and Alien, with its tagline ‘ In space, no one can hear you scream ’, and a space vessel, Nostromo, “ that hark back to images of the haunted house in the gothic horror tradition .” Bin Aziz states that films such as James Cameron ’ s The Terminator are a sub-genre of ‘ techno noir ’ that create "... an atmospheric feast of noir darkness and a double-edged world that is not what it seems.

Their greatest commercial successes have been games like Wario World and Mischief Makers, but they are better known for their critical successes, such as Gunstar Heroes, Dynamite Headdy, Alien Soldier, Guardian Heroes, Radiant Silvergun, Bangai-O, Sin and Punishment: Hoshi no Keishōsha, and Ikaruga.

Alien equivalents are even more visible, either having a brighter contrail or a bright continuous beam.

Alien RFID reader devices are prone to a security-bypass vulnerability, because the Alien account has the same default password for all RFID readers.

: After her adoptive parents, Nabeshin and Kumi-Kumi, are killed by Alien # 1, Poemy moves in with her best friend, Futaba Aasu.

In this occasion, Nabeshin and his wife are successfully killed by crucifixion, along with their robotic pet dog, by Alien # 1.

Alien species often have no natural predators and pose a substantial threat to the dynamics of existing ecological populations in the new environment where they are introduced.

Feminist critic Patricia Melzer writes in Alien Constructions: Science Fiction and Feminist Thought that gynoids in Richard Calder's Dead Girls are inextricably linked to men's lust, and are mainly designed as sex-objects, having no use beyond " pleasing men's violent sexual desires ".

The Skrashers are a reference to the Alien franchise and the Memaus are a reference to Tribbles.

Alien invasion was a common metaphor in United States science fiction during the Cold War, illustrating the fears of foreign ( e. g. Soviet Union ) occupation and nuclear devastation of the American people.

Executed November 17, 1942, signed by Leo Crowley, Alien Property Custodian: “ Two blocks of stock-98, 000 shares of common and 50, 000 shares of preferred stock in the Silesian-American, a Delaware corporation being confiscated.

The technique is common in Half-Life 2, QuakeWorld, Quake II, Quake III Arena, Quake 4, QuakeLive, CodeRED: Alien Arena, Nexuiz, Cube, Jedi Knight II, Star Wars Jedi Knight: Jedi Academy, Uberstrike, Soldier of Fortune II, Doom 3, War § ow, Call Of Duty, Return to Castle Wolfenstein, Wolfenstein: Enemy Territory and Tremulous.

The United States of America's Alien and Sedition Acts of 1798 broke with the common law precedent of the time, in that it allowed for truth as a defense, though judges were not consistent in their rulings.

Other common interpretations include blood from the mauled staff member, or snot from the Alien creature.

Feminism has driven the creation of a considerable body of action-oriented science fiction with female protagonists: Wonder Woman ( actually originally created in 1941 ) and The Bionic Woman during the time of the organized women's movement in the 1970s ; Terminator 2 and the Alien tetralogy in the 1980s ; and Xena, Warrior Princess, comic book character Red Sonja and Buffy the Vampire Slayer.

Alien ( 1979 ) combined the naturalistic acting and graphic violence of the 1970s with the monster movie plots of earlier decades, and used science fiction.

" Known Space " ( also the commonly used title for Larry Niven's future history science fiction series ) is about 80 light years in diameter with 10, 000 stars, including Human Space ( 40 light years diameter, 524 stars in 357 systems, 30 billion humans, ⅔ on Earth ), as well as neighbouring Alien civilisations.

His first major film as director, Dark Star ( 1974 ), was a science fiction black comedy that he cowrote with Dan O ' Bannon ( who later went on to write Alien, borrowing freely from much of Dark Star ).

Towards the end of his life, in 1985, he worked briefly for Eclipse Comics including on the science fiction anthology Alien Encounters.

Moebius contributed storyboards and concept designs to numerous science fiction and fantasy films, including Alien, Willow, Tron ( 1982 ), and The Fifth Element.

Moebius contributed storyboards and concept designs to numerous science fiction films, including Alien by Ridley Scott, Tron by Disney, The Fifth Element by Luc Besson, Star Wars V, and for Jodorowsky's planned adaptation of Frank Herbert's Dune, which was however abandoned in pre-production.

James Cameron's 1986 sequel to Alien, Aliens, was very different from the original film, falling more into the action / science fiction genre, it was both a critical and commercial success and Sigourney Weaver was nominated for Best Actress in a Leading Role at the Academy Awards.

* McMurdo Station is referred to in the science fiction movies Dark Star and Alien as being the site of a major space-traffic control center.

Danson's image, along with that of Scott Bakula, was used as a selectable character in Alien Breed II: The Horror Continues, a science fiction shoot ' em up released for the Amiga home computer system in 1993.

Unlike most other early games in the genre, it featured a science fiction setting inspired by the film Alien, but had gameplay that closely resembled later survival horror games in many ways.

The 2008 science fiction film Indiana Jones and the Kingdom of the Crystal Skull begin in " Hanger 51 " ( an allusion to Area 51 and Hangar 18 within the base ,) and had Dr. Jones lead Soviet agents to a mummified Alien body from the Roswell Site, contained in a chest labeled " Roswell, New Mexico.

Alien Breed is the first in the Alien Breed series of science fiction shooter computer games played with a top-down view, for one or two players.

De Lancie has produced and acted in several audio dramas based on classic science fiction stories for the production company Alien Voices, which he founded with Leonard Nimoy.

2006: The Alien Nation exhibition is presented with inIVA, exploring the complex relationship between science fiction, race and contemporary art.

Alien abductions have been the subject of conspiracy theories and science fiction storylines ( notably The X-Files ) that have speculated on stealth technology required if the phenomenon were real, the motivations for secrecy, and that alien implants could be a possible form of physical evidence.

Alien Nation is a science fiction television series, loosely based on the movie of the same name.

Lance James Henriksen ( born May 5, 1940 ) is an American actor and artist best known to film and television audiences for his roles in science fiction, action, and horror films such as the Alien film franchise, and on television shows such as Millennium.

Also in 2009, McCormack was cast in the science fiction movie Alien Trespass.

Following this success 20th Century Fox approached Harlin with science fiction / horror sequel Alien 3.