See also List of extraterrestrials in fiction

In popular fiction and conspiracy theories, life forms, especially intelligent life forms, that are of extraterrestrial origin, i.e. not coming from the Earth are referred to as alien and collectively as aliens. Prime examples of how aliens are viewed are found in the movies Alien, E.T. the Extra-Terrestrial, Signs, Independence Day, and The War of the Worlds.

This usage is clearly anthropocentric: when humans in fictional accounts accomplish interstellar travel and land on a planet elsewhere in the universe, the local inhabitants of these other planets are usually still referred to as "alien," even though they are the native life form and the humans are the intruders. In general they are seen as unfriendly life forms. This may be seen as a reversion to the classic meaning of "alien" (see Foreigner ) as referring to "other," in contrast to "us" in the context of the writer's frame of reference.

Typical characteristics

In popular

There are several reasons for this humanoid depiction in popular culture. It makes it easier for an alien in a movie scene to simply be a disguised human actor. Aliens in movies, in order to catch our attention, must trigger instantaneous emotional reaction; this requires a design based on recognizable human facial features and expressions. It is easier to relate to an alien with features we recognize such as arms and legs, two eyes, a nose and a mouth, as well as behavior we recognize such as baring its teeth in anger or widening its eyes in shock or surprise.

However, if real extraterrestrial life exists, few people expect to find humanoid characteristics, believing that this would be too great a coincidence given an entirely different evolutionary scale. Therefore, it is extremely unlikely that alien life similar to humankind exists.

Historical ideas

The ficitionalization

the frigid spheres that 'bout them fare;

Which of themselves quite dead and barren are,

But by the wakening warmth of kindly dayes,

And the sweet dewie nights, in due course raise

Long hidden shapes and life, to their great Maker's praise.

The possibility of extraterrestrial life was a commonplace of educated discourse in the 17th century, though in Paradise Lost (1667) Milton cautiously employed the conditional when the angel suggests to Adam the possibility of life on the Moon:

Her spots thou seest

As clouds, and clouds may rain, and rain produce

Fruits in her softened soil, for some to eat

Allotted there; and other Suns, perhaps,

With their attendant Moons, thou wilt descry,

Communicating male and female light,

Which two great sexes animate the World,

Stored in each Orb perhaps with some that live.

Fontanelle's "Conversations on the Plurality of Worlds" with its similar excursions on the possibility of extraterrestrial life, expanding rather than denying the creative sphere of a Maker, was translated into English in 1686. In "The Excursion" (1728) David Mallet exclaimed, "Ten thousand worlds blaze forth; each with his train/Of peopled worlds."

See also

• Abduction phenomenon
• Alien invasion
• Ancient astronaut theory
• Black triangles
• Conspiracy theory
• Crop circle
• Cult
• Dropa
• first contact
• Grey alien
• Invader Zim
• Destroy All Humans!
• Hollow earth
• List of magazines of anomalous phenomena
• List of alien movies
• List of space aliens in fiction
• Military flying saucers
• Roswell rods
• Scientology
• Starchild skull
• UFO conspiracy theory
• Ufology
• Ummo
• Unidentified flying object
• Xenobiology

Further reading

• Sagan, Carl. 1996. The Demon-Haunted World: Science as a Candle in the Dark: chapter 4: "Aliens"